This 50% active cycle TTL clock generates signals from 4 to 20 Hz. Its power must be supplied with 5 V and other frequencies can be generated with capacitor replacement.
In the MEMs line of the ST available on Mouser Electronics we highlight the MP23AB01DH audio...
The circuit shown uses the 741 operational amplifier, but lower noise and higher gain equivalents...
When the temperature rises above the value adjusted by P1 the relay triggers on. The rated voltage for the...