Found in documentation from the 1980s, this circuit uses a SG1524. It is an uncommon integrated circuit nowadays. The circuit provides a current of 20 mA with a symmetrical voltage between 15 and 18 V.
This power supply is protected from shorts in the load. The BD135 must be mounted on a heatsink...
This amplifier for audio transmission lines was found in a 1961 American publication. The critical...
The maximum frequency of the oscillator shown in figure 10 is on the order of 5 MHz, depending on the...