This circuit uses two relays that switch when the voltage exceeds the value given by zener D2. The circuit is from a Radio Electronics magazine from April 1975.
The frequency of this oscillator depends on R and C (see math section for electronics). The...
This circuit, suggested by the Linear Applications Handbook of National Semiconductor, uses a very...
January 2017 - The new MAX14001 and MAX14002 analog to digital converters from Maxim can now be...