This low power circuit can be powered with voltages from 1.8 V. We find it in a 80s Hands On Electronics. The load can be from 8 to 32 ohm.
This 1987 signal injector included the power supply from the power grid. The transformer is 6 + 6...
This amplifier was found in a 70s documentation. The product gain x bandwidth is 350 MHz. The...
This simple receiver with junction FET uses a high impedance magnetic earphone (over 2 k). Power...