1. AUDIO & AMPLIFIER
P1
2N3055 Power Amplifier
P2
Automatic Loudness Control
P3
60W Guitar Amplifier
P4
High Quality Intercom
P5
10W Audio Amplifier with Bass-boost
P6
60W Bass Amplifier
P7
Electronic Stethoscope
P8
Electronic Stethoscope II
P9
10W Mini Audio Amplifier
P10
18W Audio Amplifier
P11
Sound Level Indicator
P12
Low pass filter - Subwoofer
P13
Simple Digital Volume Control
P14
Stereo Preamplifier with Bass-boost
P15
50 Watt Amplifier
P16
Amplifier 2x30W with STK465
...
2. LIGHT & LED
P76
LED Torch
P77
6V Ultra-Bright LED Chaser
P78
LED Chaser
P79
6 Channel Auto Reverse Sequential Disco Running Lights
P80
Doorbell for the Deaf
P81
TRIAC Light Dimmer
P82
Nite Rider Lights
P83
Black Light
...
3. TELEPHONE
P129
Cellular Phone calling Detector
P130
8 Line Intercommunication using 89c51
P131
Phone "Hold" With Music
P132
Telephone line monitor
P133
Telephone line monitor II
P134
Telephone amplifier
...
4. RADIO, TRANSMITTER, RECEIVER, REMOTE CONTROL
P169
15W Fm-transmitter
P170
3W FM Transmitter
P171
FM Telephone Bug
P172
The "UnFETtered Crystal Radio!
P173
FM radio (may be used with PC)
P174
4W FM Transmitter
...
5. TIMER & OSCILLATOR
P223
Ultrasonic Dog Whistle
P224
Pulse-Generator & Signal-Tracer
P225
Amplifier Timer
P226
220 Volts Flashing Lamps
...
6. AUTOMOTIVE, MOTOR, CARS & MOTORCYCLES
P262
Automotive 12V to +-20V converter (for audio amplifier)
P263
Car Battery Charger
P264
Simple but reliable car battery tester
P265
Headlight Flasher
P266
Park Aid
P267
Speed-limit Alert
...
7. POWER & HIGH VOLTAGE
P280
500W low cost 12V to 220V inverter
P281
12VDC Fluorescent Lamp Driver
P282
High And Low Voltage Cut Off With Time Delay
P283
Pulse Charger for reviving tired Lead Acid batteries
..
8. ALARM, SENSOR, CONTROL, TOOLS, MEASUREMENT ETC
P349
Economical Pump Controller
P350
Everything-that-moves ALARM
P351
Touch Switch
P352
Temperature-controlled Fan
P353
Voice activated switch
...
EXTRA PROJECTS
P501
Nocturnal Animals Whisker
P502
Simple IF Signal Generator
P503
Sawtooth wave generator
P504
Control electrical appliances using PC
P505
Shock alarm circuit
P506
Cat repeller circuit