This circuit was found in a 1975 documentation. Current general-purpose transistors can be used, and the power is supplied with relatively high voltage. The gain is 30 dB.
The presence of C1 in this circuit from a 1977 publication, reduces surges. The circuit is for 30 V...
This circuit uses an LED (called SSL) to regulate current in a configuration with complementary...
May 2017 - Qorvo QPL9065 low-noise amplifiers can be purchased from Mouser Electronics for a...