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Project listings – Elenco Electronics 202 User Manual

Page 15

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Project #

Description

Page #

205

Motor Rotation

88

206

Motor Delay Fan

88

207

Motor Delay Fan (II)

88

208

High-pitch Bell

89

209

Steamship

89

210

Wet Finger Detector

89

211

Motor-activated Burglar Alarm

90

212

Light-activated Burglar Alarm

90

213

Spacey Fan

90

214

LED Fan Rotation Indicator

91

215

Space War Sounds with LED

91

216

Photoresistor Control

92

217

Sound Mixer Fan Driver

92

218

Electric Fan Stopped by Light

93

219

Motor & Lamp

93

220

Start-stop Delay

94

221

Mail Notifying System

94

222

Mail Notifying Electronic Bell

95

223

Mail Notifying Electronic Lamp

95

224

AM Radio with Transistors

95

225

Lasting Doorbell

96

226

Lasting Clicking

96

227

Delayed Action Lamp

96

228

Delayed Action Fan

96

229

Adjustable Time Delay Lamp

97

230

Adjustable Time Delay Fan

97

231

Transistor Fading Siren

97

232

Fading Doorbell

97

233

Adjustable Time Delay Lamp (II) 98

234

Adjustable Time Delay Fan (II)

98

235

Watch Light

98

236

Delayed Bedside Fan

98

237

This OR That

99

238

This AND That

99

Project #

Description

Page #

239

Neither This NOR That

100

240

NOT This AND That

100

241

Music AND Gate

101

242

Lamp, Speaker & Fan in Parallel 101

243

Light-controlled LED (II)

102

244

AM Radio

102

245

Transistor AM Radio

103

246

Antenna Storing Energy

103

247

Back EMF

104

248

Flashing Laser LED’s with Sound 104

249

Electromagnet Delayer

105

250

Photoresistor Paper Clip Suspension 105

251

Electromagnetism

106

252

Electromagnetism & Compass 107

253

Electromagnet Storing Energy

107

254

Electromagnet Tower

108

255

Paper Clip Compass

108

256

Paper Clip Oscillator (II)

109

257

Paper Clip Oscillator (III)

109

258

Paper Clip Oscillator (IV)

110

259

Paper Clip Oscillator (V)

110

260

Oscillating Compass

110

261

Siren Paper Clip Vibrator

111

262

Alarm Paper Clip Vibrator

111

263

Machine Gun Paper Clip Vibrator 111

264

Alarm Vibrator w/ LED

112

265

Alarm Vibrator w/ LED (II)

112

266

Motor Oscillator

113

267

Motor Oscillator (II)

113

268

Motor Oscillator (III)

113

269

Two-speed Motor Lights

114

270

Two-speed Motor Lights-Sound 114

271

Short-time Sound

115

272

Slow Light Dimmer

115

Project #

Description

Page #

273

Fading Bomb Sound

116

274

Fading Music Sound

116

275

Fading Music Sound (II)

116

276

Sound & Lights

117

277

Music with Timer

117

278

Motor Tone Generator

118

279

Motor Tone Generator (II)

118

280

Motor Tone Generator (III)

118

281

Motor Tone Generator (IV)

118

282

Turn Off Timer

119

283

Turn Off Timer (II)

119

284

LED & Bulb Timer

119

285

Alarm Timer

120

286

Alarm Timer (II)

120

287

Alarm Timer (III)

120

288

Space War Timer

121

289

Alarm Speed Adjuster

121

290

The SCR

122

291

Light-controlled SCR

122

292

Light-controlled SCR (II)

122

293

Light-controlled SCR (III)

122

294

LED Control Motor

123

295

LED Control Motor (II)

123

296

Light Oscillator

124

297

Sound, Light & Motor Stepper Circuit 124

298

Blink & Beep

125

299

Blink & Beep (II)

125

300

Simple Rectifier (II)

125

301

Alarm Motor

126

302

Alarm Light

126

303

Mirror Circuit

126

Project Listings