This circuit was found in a 1970s American documentation. It can be applied to almost any regulator. The transistor used admits equivalent, depending on the circuit current.
This simple timer can be used in many applications such as egg timer. The LED glows up when S1 is...
This filter was obtained from a Linear Technology manual from the 1990s. The power supply must be...
Found in 1965 General Electric technical documentation, this half-wave circuit controls shunt type...