This 13 A V power supply with 2 A uses a transformer with 12 V of secondary and 2 A of current. The diodes can be 1N5404 or equivalent for 2 A or more.
This circuit of a 1978 American publication monitors a telephone line by triggering a relay. The...
Found in 1965 General Electric technical documentation, this half-wave circuit controls shunt type...
The power supply shown in the figure provides voltages between 0 and approximately 15 volts, with...