This variable frequency oscillator for radio transmission covers the range from 1.6 MHz to 20 MHz, depending only on the coil used. The circuit is very stable and can be used in amateur equipment.
This circuit converts pulse frequency to current, which is indicated on an analog instrument. The...
The purpose of this circuit found in an old Elektor is to light a lower power lamp when the bigger...
This circuit has some differences from the conventional types of control in which the delay in the...