The setting of this power supply is only 0.1%. We found it in a 1969 US documentation. Transistors may be current equivalents. Note the use of symmetrical power supply.
This circuit was suggested by a 1967 General Electric manual. The waveforms of the generated...
A small loudspeaker (2.5 or 5 cm) can be used as a low impedance microphone. A preamplifier and...
This circuit was found in a 2005 Linear Technology component manual. The circuit is full bridge...