Missing Pulse Detector (Basic)
Morse Code Practice Keyer, I
Morse Code Practice Keyer, II
Motor Accu Lader (Dutch language)
Motorcycle Battery Charger
Motorcycle Brake Light Flasher
Motorcycle Low Voltage Warning
No-Hassle 3rd Brakelight hookup
Power Supply Converted from a PC - by Andy Batts
Practical, 2-wire Intercom
Pulse Timer, 555
Pulse Width modulator, 555
Pulse Width modulator, 4093
Radio Shack Special - Transmitters by Patrick Cambre
Red Alert Alarm, #1
Red Alert Alarm, #2
Relays - Sound Activated, #1
Relays - Sound Activated, #2
Relays - Transistor Boosted
Relays - Dark Activated
Relays - Delayed Turn-on
Relays - Automatic Turn-off
Relays - Long Duration
Relays - 12 Sec to 90 min
Relays - Long Duration--1 to 100 min
Relays - Long Duration--1 min to 20 hrs
Relays - Self Latching
RF Transmitter, light sensing
RJ45 Cable Tester by Bruce Marcus
Subcarrier Adapter Listen to those hidden FM transmissions
ScanMate Your (Radio) scanner buddy-pcb available!
Servo Modification - For contineous rotation
Simplest R/C Circuit
Simplest RF Transmitter
Simple Transistor Audio PreAmplifier
Single IC Audio Preamplifier
Single Cell Sealed Lead Acid Charger - by Søren
Solar Cell NiCad Charger
Solid State Relay
Telephone Transmitter (FM)
Theremin
Thermo Alarm
Thermostat
Third Brake Light Pulser
Touch Activated Alarm System
Touch Switch using Transistors
Two-Tone Trainhorn
Universal Flasher Circuit
Variable Power Supply, 1 - 30V @ 1.5A
Wailing Alarm
Warble Alarm
Whooper Alarm
Water-level Sensing and Control
Waterpump Safety Guard for Fish-pond
Weller WLC100 Soldering Station
Wireless Microphone
Xmas Lights Tester
Zap Adapter
1.5V Tracking Transmitter (with Video Clip)
2 Transistor 2 LED Flasher
4 Transistor Tracking Transmitter
4 Transistor Transmitter R8(1K) 3-03-2007
7.2V Field Charger (.pdf file)
8A Regulated Power Supply for 13.8V
9-V Stabilized Powersupply
9 to 9 pin (Female) Nullmodem Cable
12V to 9V with a LM317
30-Meter QRP Transmitter for Morse Code
555 DC-AC Inverter
555 Timer IC Tester
555 Go No/Go Tester More advanced
Electronic Symbols Template