UniVibe Pedal

The Univibe is actually a footpedal-operated phaser or phase shifter for generating chorus and vibrato simulations for electric organ or…

55 years ago

Univox Super-Fuzz Pedal

This is the circuit diagram of Univox Super-Fuzz Pedal. This pedal is actually a 69-to-early 70"s design that consists of…

55 years ago

Sound Activated Light / Lamp

This is the schematic diagram of sound activated light or lamp. The lamp or light will be turned on while…

55 years ago

Vox Tone Bender Pedal

This is the circuit diagram of Vox Tone Bender Pedal. The circuit is very similar to Fuzz Face pedal. The…

55 years ago

Easy Build FM Transmitter

This is a low cost and easy build low powered FM transmitter. The range of the FM transmitter claimed about…

55 years ago

Two Chips AM Radio Receiver

This two chips AM radio receiver circuit is a tuned radio frequency (TRF) receiver of the standard AM (amplitude modulation)…

55 years ago

LAN Tester

This LAN tester circuit originally designed by Vassilis Stergiopoulos. This LAN tester circuit optionally has two designs. The first design…

55 years ago

Ultrasonic Motion Detector

This is a ultrasonic motion detector (or movement detector) circuit. The circuit claimed has a high movement sensitivity. Even air…

55 years ago

Telephone Switcher

This diagram is the schematic diagram of telephone switcher using relays. This device connects to the telephone line and can…

55 years ago