This low noise preamplifier has a gain of 19 dB in the 30 MHz band. The circuit is from the 80s. Transistors are from the era, and equivalents can be used. The circuit consumption is 13 mA.
This interesting circuit was found in a 90’s American documentation. The circuit has a maximum...
Found in Intersil documentation from the 90s, this thermometer uses an analog indicator. The...
This circuit was found in an old American documentation. The integrated circuit used is uncommon...