Emitter Follower Complementary Stage (CB25623E)

This circuit was found in the October 1993 Electronics Now magazine. The circuit can be used in a small audio amplifier.

Time Relay (CB12432E)
This simple timer is from a 1998 publication. Other operational amplifiers can be used, and the...
Carbon Microphone Preamplifier (CB12905E)
This very old circuit, from a publication from the 1970s, uses a germanium transistor and two...
500 to 500 kHz Wobbulator (CB13846E)
This circuit generates signals for adjustments in FIs of 10.7 MHz. The transistors can be BC548 or...