This simple source with zener regulation is ideal for experimental projects with operational amplifiers. Other voltages can be obtained by changing the zeners and the transformer.
The figure shows how to connect a 7400 to obtain a bistable configuration. The circuit must be...
We found this circuit in an old English documentation from the 70s. The transistor can be a modern...
The purpose of the practical circuit shown in the figure is to generate a pulse of programmed...