LM3900 Amplifier (CB25165E)

This circuit with Norton operation is from an article in Radio Electronics magazine. The gain is given by the resistors.

Antenna Splitter (CB24740E)
This circuit was found in the April 1983 issue of Radio Electronics magazine. Its purpose is to...
Automotive Ignition Blocker by Cell (CB17635E)
Evidently, this is a project that still needs some improvements. For example, the ignition can be...
1.2 V voltage regulator (CB19515E)
This very low voltage regulator for 3 V input (2 batteries) was obtained in a documentation from...