We found this circuit in the March 1992 issue of Radio Electronics magazine. The circuit has a range from 1.25 V to 1 kV. The formula for the voltage values is given.
In the circuit shown in the figure we have the way to excite a small speaker from a TTL output. The...
This simple circuit is from a Radio Electronics from August 1952. The current depends on the...
Found in an Electronic Design, this small power source uses a battery as a voltage reference,...