This circuit generates signals for adjustments in FIs of 10.7 MHz. The transistors can be BC548 or equivalent. We found this configuration in a documentation from the 70s.
By connecting a common diode in series, it is possible to add temperature stability to the...
This circuit makes use of a Texas Instruments LinMOS operating system and requires the use of a...
This simple 1-transistor audio preamplifier appeared in the June 1968 Radio Electronics magazine. The...