Cursos

Circuits for the Hobbyist
For your electronics hobby entertainment; ENJOY! It is assumed that you have AT LEAST the equivalent of a Basic Electronics certificate for the electronics projects listed on this page. Other projects require more advanced electronics. A lot of these circuits assume the latter so I will no longer answer the tons of emails in regards to that. If you wish to learn moreabout electronics there is enough of that available on the internet. Circuits' Message Board Ask your questions here. Someone may answer them.

ScanMate Your (Radio) scanner Alternating On-Off Control buddy! 6-20-2002 Audio Pre-Amplifier #1 Simplest R/C Circuit Automatic 9-Volt Nicad Battery Charger Simplest RF Transmitter Basic IC MonoStable Multivibrator Simple Transistor Audio PreAmplifierBasic RF Oscillator #1 Single IC Audio Preamplifier Basic LM3909 Led Flasher Solar Cell NiCad Charger 7-24Battery Monitor for 12V Lead-Acid 2002 Battery Tester for 1.5 & 9V Solid State Relay Bench Top Powersupply, 0-30V/0-10A, Part 1 Third Brake Light Pulser Bench Top Powersupply, 0-30V/0-10A, Part 2 Toroids, RF/EMI Cores Bench Top Powersupply, 0-30V/0-10A, Part 3 Touch Activated Alarm System BirdieDoorbell Ringer Two-Tone Trainhorn 'Bug' Detector with Beep Universal Flasher Circuit Car Converter for 12V to 9V Variable Power Supply, 1 - 30V @ 1.5A Car NiCad Charger Wailing Alarm DC Motor Reversing Circuit Water-level Sensing and Control DC Motor Control Circuit Waterpump Safety Guard for Fish-pond Gel Cell Charger, I - Off-line Weller WLC100 Electronic Soldering Gel Cell Charger, II StationClock Generator Xmas Lights Tester Christmas Lights Tester Zap Adapter Continuity Tester, Low-Voltage 1.5V Tracking Transmitter Continuity Tester, Smart 4-Transistor Tracking Transmitter Continuity Tester, Latching

Cut Phone Line Detector Dark/Light Activated Relay Electronic Dazer 6-13-2002 Fluid-Level Detector High Voltage circuits Interesting HV devices Lantern Flasher/Dimmer Led Flasher, 2transistor Leds Flasher, alternately LED Pilot Light (AC or DC) Light Sensor With Hysteresis Logic Probe with pulse Logic Probe with pulse, CMOS Micro-Spy with FETs Micro-Spy with USW Micro-Spy with TTL Miniature FM Transmitter #1 Miniature FM Transmitter #2 Miniature FM Transmitter #3 Mini-Drill variable Powersupply Missing Pulse Detector (Basic) Morse Code Practice Keyer, I Morse Code PracticeKeyer, II Motor Accu Lader (Dutch) Motorcycle Battery Charger No-Hassle Third Brake Light 9 to 9 pin (Female) Nullmodem Cable Practical Intercom Pulse Width modulator 07-2002 RF Transmitter, light sensing RJ45 Cable Tester Radio Shack Special 8-

9-V Stabilized Powersupply 30-Meter QRP Transmitter for Morse Code 555 Timer IC Tester 5-30-2002 555 Go No/Go Tester More advanced 741-Light Sensor555 Timer/Oscillator 741 Op-Amp Capacitors 6-28-2002 Electronic Template MosFet Test Piezo Education/Tutorial PLL - Almost done! Resistor Color Code Tutorial SCR Tester Triac Test UJT Test Coils Integrated Circuits Make Your Own Shunts Relays, Relay Drivers, Solid-State "Green" means on-line, "Red" means offline

Bookmark this valuable page with 'Ctrl-D'.

Circuits Archive - Older circuits.Most are working, some are not. Could be still useful. Radio Shack Partnumbers - Most common order numbers for my circuits Tandy Corporation - European/Australian counterpart of Radio Shack TUP/TUN/DUS/DUG European transistor replacement system Tomi Engdahls' Page - Solid electronics projects! Jan Freak's Page in the Netherlands - Well thought out information. Dutch language only Bowden's HobbyCircuits - Collection of circuits, for everyone. Circuit Exchange International - Andy's website. Good selection of excellent circuits Electronic Tutorials - Collection of electronics tutorials. Dolbowent.Com - Electronic Surplus and Engineering Support. Jordan's Electronics Page - Lots of good circuits here also. LED Webpage. White Led's everywhere - Malcom's site in the UK. Guelph Amateur Radio...