Using a 100 uH inductor for L1, this circuit will oscillate around 1 MHz. The frequency will be controlled by the control voltage, which can vary between 0 and 20 Volts. The field effect transistor can be either the MPF102 or the BF245, and the assembler must pay attention to the arrangement of the terminals of these components. The 2.5 mH coil serves as a load for the generated signal.
