
Active Power Zener
Active Antenna for AM-FM-SW
Active Antenna for HF-VHF-UHF
Active Antenna, easy to build
Active FM Antenna Amplifier
Alternating On-Off Switch, #1 
Alternating On-Off Switch, #2 
Amperage Booster for 78xx's
Aviation Band Receiver
PCB for Dan Fink's Anemometer (0 available!)
Audio Booster with 1 Transistor 
Audio Pre-Amplifier #1
Automatic 9-Volt NiCad Battery Charger
Auto-Fan, temperature control 
AT-121 (3W) to AT-150 (2W) Converter 
Basic IC MonoStable Multivibrator
Basic RF Oscillator #1
Basic LM3909 Led Flasher
Battery Monitor for 12V Lead-Acid
Battery Tester for 1.5 & 9V
Battery (NiCad) Rejuvenator
Bench Top Power Supply, Part 1 
Bench Top Power Supply, Part 2
Bench Top Power Supply, Part 3 "Troubleshooting"
Bench Top Power Supply, Part 4 Pics
Bench Top Power Supply Copyright Theft
Bench Top Power Supply, Auto-Fan
Birdie Doorbell Ringer
Broadcast-Band RF Amplifier
Bug Detector with Beep
Bug Detector Q1 outline
Car Back-up Alarm
Car Converter for 12V to 9V
Car NiCad Charger
Christmas Lights Tester
Coin Tosser
Compressor-Mate 
Clock Generator
Constant Current Charger
Continuity Tester, Low-Voltage
Continuity Tester, Smart
Continuity Tester, Latching 
Countersurveillance Monitor Q1 outline
Crow Bar #1
Crow Bar #2
Crystal Radio--make your own 
Crystal Tester, #1 
Crystal Tester, #2
Crystal Tester, #3
Cut Phone Line Detector
CW/SSB Radio Add-on SOON
Dark/Light Activated Relay
DC Motor Reversing Circuit
DC Motor Control Circuit
DCS 400 Multipurpose Connector
DSL Filter (phone-line)
Dual 12V Power Supply
Egg Timer
Electronic Canary (Doorbell) 
Electronic Gadgets for Radio Control
Fish Caller
Fluid-Level Detector
Fox & Hound, wire tracer
Gel Cell Charger, I
Gel Cell Charger, II
Glowplug Driver (a)
Glowplug Panel (b)
Headlight Alarm
Heat Sensor
High-Voltage Projects you can Build
HotChek - Brent's website
Hot Wire Foam Cutter, 1 - by Tom Weedom
Hot Wire Foam Cutter, 2 - by Charles Wenzel
Hot Wire Foam Cutter, 3 - by Steven Mohr
Hot Wire Foam Cutter, 4 - by JoeBoy
Hot Wire Foam Cutter, 5 - by The Hermit MachineShop
Hot Wire Foam Cutter, 6 - by Al Schoepp
Hot Wire Foam Cutter, 7 - by Rocket Team Vatsaas
Hot Wire Foam Cutter, 8 - by Daniel Hartman
Hot Wire Foam Cutter, 9 - by D.J.Kammo (pterodactylus)
Hot-Wire Foam Cutter, 10 - by Tony van Roon
Lantern Flasher/Dimmer
Latching Continuity Tester 
Lead Acid Battery Charger with Float
Lead Acid Battery Charger
Lead Acid Charger (Gel Cell)
Lead Acid Battery Charger (LM317)
Led Flasher, 2 transistor
Leds Flasher, alternately
LED Pilot Light (AC or DC)
Light Sensor With Hysteresis
Lithium-Ion Charger, Single cell
Logic Probe(1), with pulse, TTL/CMOS
Logic Probe(2), with pulse, TTL/CMOS
Logic Probe(3), Audible, TTL/CMOS
Main Fuse-Panel Emergency Light
Micro-Spy with FET's
Micro-Spy with USW
Micro-Spy with TTL
Miniature FM Transmitter #1
Miniature FM Transmitter #2
Miniature FM Transmitter #3
Miniature FM Transmitter #4
Miniature FM Transmitter #5
Miniature FM Transmitter #6
Miniature FM Transmitter #7
Miniature Tracking Transmitter
Mini-Drill variable Powersupply
Missing Pulse Detector (Basic)
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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
Motorcycle Turn-signal System 
No-Hassle 3rd Brakelight hookup
Power Supply Converted from a PC - by Andy Batts
Practical, 2-wire Intercom
Pulse Timer, 555
Pulse Width modulator, NE555
Pulse Width modulator, CD4093
Pulse Width modulator, LM324
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
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
A simple solar panel regulator
Solid State Relay
Telephone Transmitter (FM) 
Theremin
Temperature Controled Fan
Temperature Indicator
Thermo Alarm
Thermostat, #2
Thermostat, #3
Third Brake Light Pulser 6-10-2009
Touch Activated Alarm System
Touch Switch using Transistors
Two-Tone Trainhorn 
Universal Flasher Circuit
Universal Lab. Power Supply, Part 1 [2010] "5V/3A, 50V/5A"
Universal Lab. Power Supply, Part 2 [2010] "5V/3A, 50V/5A"
Variable Power Supply, 1 - 30V @ 1.5A 
Wailing Alarm
Warble Alarm
Whooper Alarm, #1 1-20-2010
Whooper Alarm, #2
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
7.2V Field Charger (.pdf file)
8A Regulated Power Supply for 13.8V 2-05-2010
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
Hobby Kits for your building pleasure 
Hard-to-find Components 4sale! 
Relays
High-Voltage Projects you can Build

555 Timer/Oscillator
741 Op-Amp
Capacitors
Coils
Crystal Oscillators (SOON)
MosFet Test
Piezo Education/Tutorial
PLL
Resistor Color Code Tutorial
Relays, Relay Drivers, Solid-State
SCR Tester
Toroids
Transistor Tutorial, 12 parts! 
Triac Test
UJT Test
 "Green" means on-line, "Red" means off-line
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