This preamplifier for phonographic capsules using FET was found in 90s American documentation. Consumption is very low. The power can be obtained from the amplifier circuit with which it works.
This circuit was obtained in the publication 101 Electronics Projects of 1979. The circuit can be...
This 50's receiver includes an amplifier stage with a transistor complementary to the CK722, in...
Found in Popular Electronics from the 90's, this circuit makes use of components from the time. |...