This circuit, with a 12 V input, was found in a Popular Electronics from the 1990s. Information is given about the ferrite-wrapped transformer. The transistor must be mounted on a heatsink.
This circuit has a very low operating current. The frequency of blinks is determined by C1 which...
Figure 1 shows a hal-wave voltage doubler operating with the Power-supply voltage. Output current...
This circuit was found in a General Electric documentation from 1965. The circuit is full wave for...