Video cable MUX (CB20914E)

Found in old documentation from Linear Technology, this circuit is intended for the transmission of 2 video signals over the same cable.

Bass Booster LM386 (CB13684E)
This low power bass booster is from the 1977 National Semiconductor Audio Handbook. The circuit is...
Heart Monitor –Transmitter (CB25406E)
This circuit was found in a Radio Electronics magazine from November 1991. The circuit operates at 2.2...
1 MHz FET Oscillator (CB6148E)
This circuit was obtained from HAM Radio magazine in an 80's issue. The FETs are types of the time...