Found in a 90s 303 Circuits, this circuit aims to provide a soft start for a low voltage halogen lamp. The MOSFET supports an equivalent.
The figure shows how to implement an alarm buzzer in an LM3914 to warn about crossing the scale...
This circuit can act as a shield being controlled by a microcontroller by pin 1 or 2. The...
This circuit was obtained from a 1980's QST magazine. The circuit can generate 1 to 15 MHz signals...