60's crystal radio (CB22171E)

Found in an English publication from the 1960s, this circuit uses period components, including the commercial grade coil.

Simple Estroboscopic Lamp (CB453)
This circuit makes na incandescent lamp flash fast producing the stroboscopic effect. The speed is...
Reverse RIIAA Response Circuit (CB13880E)
This circuit is intended for testing circuits with RIAA equalization. We found this configuration in a 1977...
Triac two-way switch (CB22142E)
Found in old English documentation, this circuit simulates a diac and can be used to trigger...