This circuit uses an amplifier from National Semiconductor, uncommon nowadays. The numbers in parentheses are for the second channel. The circuit is suitable for old tape recorders.
This circuit was found in February 1976, Radio Electronics magazine. The components are from the...
I found this circuit in a 1993 technical documentation. When we press the switch in parallel with...
This circuit provides two outputs of the same signal. One with the original phase and the other...