Found in National Semiconductor documentation from the 90's, this circuit has an output current of 5 V. The integrated circuit must have a heat sink.
This telegraph microtransmitter for a frequency determined by the coil and the crystal was found...
We found this circuit in the November 1995 Electronics Now magazine. The circuit is more accurate than...
This circuit with output powers of 2 to 3 W depending on the power supply was found in the...