Eighth-Order Filter (CB6741E)

This low pass filter has attenuation of 5.5 dB and the frequencies depend on the values of the components in the case 1 kHz.

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LASER Diode Driver (CB21010E)
Found in American documentation from the 1990s, this simple circuit excites a LASER diode. The...
Microphone balanced amplifier (CB9388E)
This circuit was found in an old American documentation. The integrated circuit used is uncommon...
LM381 Low Distortion Amplifier (CB25274E)
This circuit was obtained from the February 1990 issue of Radio Electronics magazine. The circuit...