This circuit is from a documentation on the MC1539 from Motorola and may, however, be implemented with equivalent operations. The transistor also supports equivalent.
This is the typical circuit of a 60's tape recorder. The circuit uses only two transistors and has a...
Found in a QST from the 90's this circuit is suitable for the medium and short-wave range. |...
The shunt type regulators are connected in parallel with the load, deflecting the current to...