Temperature to frequency converter (CB7325E)

This circuit was obtained in a Radio Electronics of the 90s. The circuit uses an integrated circuit that is not common today.

| Clique na imagem para ampliar |

Light Alarm (CB18345E)
This circuit is from a Japanese magazine from 1967. The circuit uses transistors from that time,...
ISL 85005x Buck Synchronous Regulator - Intersil
September 2017 - Intersil's ISL850x Synchronized Buck Regulators can be ordered from Mouser...
Manual Advertisement Canceller (CB4217E)
The idea is simple: using a flashlight to cut your TV commercials triggers a relay that turns off...