Found in American documentation, this switch is based on the 4093. The load will determine the supply voltage. The transistor is general purpose.
This digital timer provides timings from 1 minute to 10 hours with indication on a 3-digit...
Using only one general purpose transistor this circuit is powered by batteries. The lamp of the...
With the values of the components used in this circuit, the signal produced is 800 Hz rectangular with...