1. One switch controls one lamp 1

2. A switch controls a lamp and connects to another socket 1.

3. A switch controls three light zones or a plurality of colored lights 2.

4. Two single switches control two lamps 3

5. Two ways to control the light line in two places with two double switches 3

6. Control a lamp with three switches.

7. Five-story unit lighting switch control method 5

8. Connect two 1 10V bulbs to a 220V power supply, and use 5.

9. Low-voltage bulbs use a 220-volt power supply.

10. Extension of incandescent lamp life line 6

1 1. Extend the life of incandescent lamp with diode wire 7.

12. Simple dimming lamp 7

13. Simple thyristor dimming lamp 8

14. stepless dimming table lamp 8

15. Connection method of searchlight, infrared lamp, iodine tungsten lamp and sodium lamp 9

16. Connection method of ultraviolet germicidal lamp 1 1

17. Connection method of high-pressure mercury lamp 1 1

18. Connection method of tubular xenon lamp 12

19. black light wiring method 12

20. General connection method of fluorescent lamps 13

2 1. Double fluorescent lamp connection mode (outdoor advertising double fluorescent lamp connection mode) 14

22. Light the fluorescent lamp line with direct current 14.

23. Fast electronic upconverter for fluorescent lamps 15

24. Fluorescent lamp with reactive power compensation 16

25. Four-wire ballast connection of fluorescent lamp 16

26. Fluorescent lamp dimmer 17

27. Self-made 20W fluorescent lamp dimmer 17

28. Fluorescent lamp doubles as TV AC voltage regulator circuit 18

29. Simple energy-saving indicator light 19

30. Electronic fluorescent lamp ballast circuit 20

3 1. Simple flash indicator 2 1

32. Street lamp 2 1 photoelectric control circuit

33. Another light-controlled street lamp line 22

34. The car turns flashing indicator light 23

35. Lighting automatic delay turn-off circuit 24

36. Building corridor lighting automatic delay closing circuit 24

37. Thyristor automatic delay lighting switch 26

38. Simply move flash 27

39. High Power "Flowing" Advertisement Lamp Control Circuit 28

40. Advertising neon line 29

Second, the motor control circuit 3 1

4 1. Manual forward rotation control 3 1

42. Control with change-over switch 32

43. The reverse switch 32 is used for forward and reverse control.

44. Forward rotation control with self-locking 34

45. Forward rotation control with overload protection 34

46. Button interlock positive and negative control 36

47. Positive and negative control of contactor chain 37

48. Forward and reverse control of button and contactor compound interlock 38

49. Limit control 39

50. Use the inching button to control the motor start-stop circuit 40.

5 1. Reversible inching control 4 1

52. Controls that can jog and work for a long time 4 1

53. Reversible inching and starting mixed control 42

54. Automatic cycle control 44

55. Positive and negative rotation control consisting of three contactors 45

56. Forward and reverse control with arc interlocking relay to extend the conversion time 46

57. Multiple motors start control at the same time 47

58. Interlocking control of spindle motor and hydraulic motor of drilling machine 47

59. Startup control of rotor series resistance of wound asynchronous motor 49

60. 50 lathes, grinders, milling machines, drilling machines and boring machines are commonly used in enterprises.

6 1. Use the current relay to control the mechanical wrench circuit 59

62. Positive and negative control to prevent interphase short circuit 60

63. Another positive and negative control prevents interphase short circuit 6 1

64. Intermittent operation control 62

65. Another intermittent operation controller 62

66. Motor automatic quick restart circuit 63

67. Low speed pulsation control 64

68. Forward and reverse start-stop control preselected by changeover switch 65.

69. Line 66 for changing operation mode by using changeover switch

70. Start-stop control that can send out driving signals 66

7 1. Two-way safety start automatic switching control 67

72. One motor stops running before the other. sixty-nine

73. Two motors interlock control 70

74. Another two-motor interlocking control 7 1

75. Driving control of the eighth gear button 7 1 operation

76. Multipoint control 73

77. Single-line remote start-stop control 73

78. Single-wire remote forward and reverse control 75

79. Control of two-speed motor 76

80. Speed control of two-speed motor with three contactors 76

8 1. Automatic acceleration control of two-speed motor 78

82. Single button control motor start-stop circuit 78

83. Self-assembled 80-wire motor distribution cabinet

Reversible control of 84.82 series motor knife switch

85. According to the principle of speed, current and time, control the starting circuit of DC motor.

86.DC motor using rheostat start control 85

87. Direct current motor forward and reverse control 86

88.JZT electromagnetic speed controller 87

Three, the motor step-down start line 9 1

89. Automatic coupling decompression starts 9 1

90. Manual control of Y-Delta step-down start-up 92

9 1. Starting control of series resistance of stator winding 93

92. Manual series resistance start control 94

93. The stator winding series resistance (or reactance) step-down start another method 95.

94. Y-Delta startup control is automatically switched by transistor delay circuit 96.

95. Using autotransformer and time relay to start two kinds of control 96

96. Autotransformer manual start control 99

97.Y-Delta step-down start control with intermediate and time relay delay conversion 100

98. Use the time relay to automatically switch Y-△ start control 10 1.

99. Y-Delta switch starts to control the cage motor 102

100. Manual Y-△ step-down start control 103

10 1. Start the control with compensator 104.

102.Y-△ step-down start control with two contactors 105

103.Y-△ step-down start control with three contactors 107

104. ordinary automatic compensation step-down starting cabinet 108

105. Start control frequency sensitive rheostat 1 10.

106. Yanbian triangle depressurization start 1 15

Four, motor braking circuit 1 17

107. Short circuit braking of three-phase squirrel-cage asynchronous motor 1 17

108. Simple short-circuit braking with reversible inching control 1 18

109. electromagnetic brake control 1 19

1 10. Related braking after power failure 120

1 1 1. Reverse braking of asynchronous motor 12 1

1 12. series resistance step-down start and reverse braking 122

1 13. Asymmetric resistance reverse braking 123

1 14. Reversible rotating reverse braking 124

1 15. A simple and practical energy-consuming brake 125

1 16. Energy consumption braking of single-tube rectifier 126

1 17.DC energy consumption braking 127

1 18. energy consumption braking of cage motor 128

1 19. Energy consumption braking of single-phase bridge rectifier 129

120. Energy consumption braking of three-phase half-wave rectifier 130

12 1. Capacitance-electromagnetic braking 13 1

122. Self-excited electricity-short circuit braking of three-phase squirrel-cage asynchronous motor 13 1

123.DC motor 132 reverse braking

124.DC motor energy consumption braking 133

V. Building Decoration Wiring Lines 135

125. Power distribution line in building decoration construction site 135

126. Distribution lines of six-floor distribution system 135

127. One-room-one-hall distribution line 139

128. Two bedrooms and one living room distribution line 140

129. Four rooms and two halls distribution line 142

130. Lighting distribution box line 142

Six, electrical protection circuit 144

13 1. 144 motor double-door protection device

132. Claw gap arrester and valve arrester 145

133. Connect the lines with isolation transformers 145.

134. Safe low-voltage transformer 146

135. Safety voltage-controlled motor start-stop line 146.

136. Safety grounding wire for motor 147

137. Connect the neutral wire to the power socket 148.

138. motor safety neutral line 149

139. star-connected motor open-phase protector 150

140. motor open-phase (disconnection voltage) protection 15 1

14 1. Open-phase protection of zero-sequence voltage motor 152

142. Simple star zero-sequence voltage open-phase protection 153

143. Under-current relay is used for phase-lack protection 154.

144. delta-connected motor 154 zero-sequence voltage relay open-phase protection

145. Add an intermediate relay as a simple open-phase protector circuit 155.

146. 157 energy-saving open-phase protector for three-phase asynchronous motor

147. Automatic protection of motor phase failure 158

148. Thermal relay protection adopts current transformer 159.

149. Low-voltage electric shock protector 160

150. Simple voltage type low-voltage electric shock protector 16 1

15 1. Current type low-voltage electric shock protector 162

152. automatic control safety device for high voltage power network 164

Seven, automatic control circuit 166

153. Single-phase lighting two-way mutually standby power supply lines 166

154. Two paths of three-phase electricity come from switchgear 167.

155. 170 automatic control of water heating in tea boiler

156. Simple temperature controller 170

157. Simple thyristor temperature automatic control 17 1

158. Temperature control of triac 172

159. Simple temperature control 172

160. automatic sprinkler control of fountain 173

16 1. Automatic water connection line 174

162. automatic gas circulation furnace temperature control circuit 175.

163. 177 lathe no-load automatic stop line

164. Black automatic lighting control, rain control and wind control circuit 178

165. photoelectric control automatic stop line 179

166. Automatic air cooling circuit of power transformer 179

167. No-load self-stop line of gear machine tool 18 1

168. Pedal switch of grinder 182

169. pressure gauge for live contact of water level control circuit 182

170. Three kinds of water level automatic control circuits 184

17 1. Automatic control water supply pipeline for large water tower 185

Eight, commonly used electronic circuits 19 1

172. Self-made safe and reliable electric iron 19 1

173.BZN-5 electronic fly killer 19 1

174. electronic mousetrap 192

175. Making electronic doorbell with music integrated circuit 193

176. Two kinds of single-line remote control bidirectional bells 194

177. Simple electronic alarm 195

178. audible and visual alarm 195

179. monitoring and alarm circuit of power transformer for lack of phase 196

180. Power failure alarm 197

18 1. AC motor burglar alarm circuit 197

182. Power cable anti-theft alarm circuit 198

183. Water full alarm 198

184. Power failure and incoming call alarm 20 1

185. Simple intermittent sound alarm 20 1

186. Alarm 202 capable of identifying instantaneous fault

187. Two-parameter input with contact signal alarm 203

188. Simple acousto-optic display alarm 204

189. Wire circuit breaker 205

190. Multi-core cable breakpoint detector 205

19 1 .7-function single-phase plug display 208

192. Safety circuit breaker monitor 209

193. Electronic electroscope 209

194. regulated power supply with adjustable output voltage 2 1 1

195. DC regulated power supply with output power up to 2A+0 1.

196. Dual-purpose DC power supply 2 13

197. universal electric fan wiring 2 13

198. Breeze control of household electric fans 2 14

199. Common speed regulating circuit for desk fan 2 14

200. Two simple electronic regulators 2 15.

20 1. Simple thyristor AC voltage regulator 2 16

202. Thyristor AC switch 2 17

203. Thyristor three-phase AC switch 2 18

204. Simple electronic lock 2 18

205. Simple password lock 2 19

206. Horn and tube amplifier with 2 19.

207. The speaker is connected to a simple high-low frequency divider with line 22 1.

208. Class bell timing circuit 222

209. Battery constant current charging device 223

2 10. Large luminous scoreboard controlled by button 223

Nine, rural electrician commonly used line 226

2 1 1. Lighting circuit of rural plastic greenhouse 226

2 12. Six kinds of buried lines commonly used in rural areas 226

2 13. Distribution lines of temporary lighting facilities in rural areas 234

2 14. temperature control circuit of rural power incubator 234

2 15. Agricultural electric plough and electric harrow line 237

2 16. Artemisia stem green feed chopper line 238

2 17. Distribution line of agricultural electric irrigation and drainage boat 239

2 18. Electric lighting circuit for small agricultural tractors 24 1

2 19. Asynchronous motor as generator distribution line 24 1

220. Agricultural single-phase gasoline generator wiring 243

Ten, electrician experience line 246

22 1. Y-shaped and△-shaped connection methods of three-phase AC motor 246

222. Three-phase blower six terminal connection method 246

223. Connection method of IDD5032 single-phase capacitor motor 247

224.JX07A-4 single-phase capacitor motor connection method 247

225. Single-phase blower four-terminal connection method 248

226.Y 100LY series motor connection method 248

227. Low voltage transformer short circuit protection circuit 249

228. Two-speed motor 2Y/2Y connection method 250

229.DC electromagnet fast demagnetization circuit 250

230. Line 25 1 is used to prevent the delayed release of the brake electromagnet.

23 1. separately excited 252 motor loss-of-excitation protection circuit

232. The lack of auxiliary contact AC contactor emergency wiring 253

233. Encrypted motor control circuit 255

234. AC contactor low voltage starting circuit 256

235.HF-4-8 1 series generator control circuit 257

236. Single-phase capacitor motor circuit 258

237. Concrete mixer pipeline 258

238. homemade practical insulation detector 26 1

239. The three-phase asynchronous motor is changed to single-phase running line 26 1.

240. Thermal relay inspection desk 262

24 1. Insulated withstand voltage tester Line 263

242. The contact signal line 264 is transmitted by a wire.

243. Signal the control room with single line 265.

244. Use thermal relay to make current limiting circuit 265.

245. Two kinds of self-assembled AC power phase sequence indicator 265

246. Two methods to determine the beginning and end of motor three-phase winding 267

247. A simple circuit breaker 268 consists of an earphone and a light bulb.

248. Simple wiring method for measuring the on-off of conductor 268.

249. Use the line lamp transformer to boost or step down. 269

250. Simplified method of checking thyristor 270

25 1. Dry the motor circuit with electric welding machine 270.

252. Transformer short-circuit drying method 27 1

253. Use transformer 272 skillfully.

254.272 line is used to expand the regulating voltage range of single-phase autotransformer.

255. Single-phase and three-phase autotransformer wiring 273

256. A homemade electroscope that can eliminate induced electricity 273.

257. Single power supply to dual power supply line 275

258. Watch the black-and-white TV line with the battery.

259. A wiring method of limiter 276.

260. AC welding machine general connection 277

26 1. Self-made AC /DC dual-purpose arc welder 278

262. The circuit 278 is plated with silicon rectifier devices.

XI。 Power factor compensation circuit 28 1

263. The high voltage 10kV bus reactive power compensation wiring 28 1

264. The power capacitor is used for reactive power compensation line 28 1 in substation.

265. Reactive power tracking compensation circuit 282

266. Asynchronous motor reactive power compensation circuit 283

12. Power saving circuit 284

267. Simple watt-hour meter power-saving circuit 284

268. AC contactor pressureless operating device 285

269. Four types of electric welding machine no-load automatic stop line 286

270. AC contactor changed to DC operation power saving method 289

27 1. Silent operation circuit of AC contactor 290

Thirteen. The electrical instrument circuit 292

272. Connection 272. DD 17 Single-phase tripping watt-hour meter 292

273. Single-phase watt-hour meter measurement into the line active power 293

274. Three kinds of DT8 three-phase four-wire watt-hour meter wiring lines 293

275.DS8 series watt-hour meter three kinds of wiring 295

276. Two kinds of single-phase watt-hour meters can measure the active power connection circuit of three-phase electrical appliances.

277. Two kinds of three-phase reactive power sine meter wiring lines 298

278. Three-phase active power watt-hour meter connection method 300

279. Measure the three-phase reactive power line 300 with a single-phase watt-hour meter.

280. Three connection modes of DC watt-hour meter 300.

28 1. Common connection methods of DC ammeter and DC voltmeter 302

282. Connection method of AC ammeter 303

283. Two kinds of three ammeters are connected to the three-phase power line 304.

284. Power, power factor and frequency measuring circuit 304

285.JDJ voltage transformer wiring 305

286. The connection method of AC-DC dual-purpose voltmeter 306

287. Five commonly used automatic control instrument wiring methods 307

288. The electrician commonly used multimeter, megger, clip-on ammeter wire 3 1 1.

Fourteen, motor soft start circuit 3 19

289. A SIPP STR soft starter controls two motor lines 3 19.

290. The SIPPSTR soft starter starts two motor lines 320.

29 1.BCK foil winding magnetic control motor soft starter circuit 32 1

292. Changshu CR 1 series motor soft starter with bypass contactor line 322.

293. Renault JJR5000 series intelligent soft start circuit 325.

Fifteen. Frequency conversion speed regulating circuit 327

294. Frequency converter speed regulating circuit with remote control setting box 327

295. Inverter speed regulating circuit with three-speed setting operation box 328

296.VACON NX series inverter and VFD-007V23A inverter wiring 328

297. Step operation and inching operation circuit of motor inverter 330.

298. Using single-phase power supply frequency conversion to control three-phase motor circuit 33 1.

299. The inverter with forward and reverse function controls the forward and reverse speed adjustment circuit of the motor 332.

300. No positive and negative function inverter control motor positive and negative speed regulation circuit 333

Appendix 335