The circuit shown was obtained in American documentation from 1968. MOSFETs can be replaced by equivalents. The circuit dissipation is less than 0.5 mW.
This metal detector circuit uses an AM radio as an indicator. The radio is placed off-station and tuned...
This oscillator produces a modulated signal using a unijunction transistor. We found it in an...
This transmitter was obtained in a 1953 publication. The original transistor was made of...