This circuit for dual-gate MOSFET was found in a 90’s Popular Electronics. The coils are according to the frequency range that must be amplified.
In the figure we have the way to use a low-cost digital clock chip to trigger an alarm. The...
This simple general purpose transistor test is nothing more than a Hartley oscillator. The...
This circuit was found in old documentation, appearing elsewhere in this section, taken from other...