Found in a 1980s documentation, this amplifier uses an integrated circuit that is not easy to obtain now as it is of the era. The circuit is intended for FI ceramic filter circuits.
This voltage level-triggered circuit was found in a 1969 Ferranti English documentation. Modern...
Using 555 integrated circuits, this alarm circuit was found in a 90s American documentation. The signal...
Unlike the CIR4620 circuit, the circuit shown in the figure operates by capacitance. This means...