This power supply is based on the 723 integrated circuit, which is no longer very common today. The transistor must have a heatsink and the bridge can be formed by diodes 1N4002 or equivalent.
This circuit was published in an English magazine from 1980. The magazine no longer exists, but...
This is the power source suggested in the old European publication for the CB19635E watch. The...
The EVAL-CN0397-ARDZ evaluation board from Analog Devices is compatible with Arduino shields to...