Popular Circuits

Tone Generator with 555
Electronic I CHING Detector
Multi-color LED driver
Fast data aquisition 2
High output 600 Ohm line driver
Laser Power Supply
simple mixer
Simple Telephone Ring Tone Generator Circuit schematic with explanation
H-Bridge (A2060H) Manual
Android talks to Arduino board
DIY Welder Control Board
R-C Twin-Tee Circuit Reduces Power-Supply Hum
fet current source
ic 7812 dual regulator power supply
HF transceiver
Interface Bluetooth with LPC2148 circuit
Bicycle Radio easy and cheap to build (April 1940)
Human biological signals consisting of a preamplifier circuit INA102