Equalizer Preamplifier (CB24709E)

This circuit was found in the July 1982 issue of Radio Electronics magazine. The integrated circuit is of a newly released type at the time.

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Servo speed control (CB8956E)
Found in a 1970 documentation, this circuit makes use of 741 operational amplifiers that are...
Temperature to Frequency Converter LM35 or LM34 (CB25447E)
We found this circuit in the March 1992 Radio Electronics magazine. The circuit provides 100 Hz...
Or Exclusive with Diodes and Transistors (CB19894E)
The diodes are for general use and the transistors also in this Exclusive-OR circuit. The circuit may...