Stereo audio meter (CB8228E)

This indicator or VU meter for stereo amplifiers was found in a 90s Radio Electronics. The integrated circuit used is uncommon today.

| Clique na imagem para ampliar |

Simple AM radio ZN416E (CB8203E)
The ZN416E integrated circuit is uncommon today. It consists of a complete radio, like the one...
DC Motor Control (CB10245E)
This circuit is from an English magazine of 1977. The circuit is still current, just using a TIP41...
Alarm Siren 4001 (CB24363E)
This two-tone alarm siren was found in the January 1975 issue of Radio Electronics magazine. The...