Suggested by a 1965 Electronic Design, this circuit has a gain of 15 dB at 45 MHz and can be changed to operate on other frequencies. The tetrode FET is an uncommon component today.
This circuit was found in a 1964 Electronic Design to indicate when a headlight or flashlight bulb is...
In the figure we have a way of obtaining a 13,2 V with current up to 5 A using an integrated 7812...
Using a 4046 PLL this circuit generates rectangular signals in three wavebands that depend on the...