This circuit was found in a 1993 Electronics Hobbyst Handbook. The circuit operates in the FM range. The coil has 4 turns of 24 or 26 wire in a coreless form 0.5 cm diameter.
This circuit produces a sinusoidal signal whose frequency can be calculated using the formula next...
The UM3562 integrated circuit (not very easy to find) synthesizes three types of sound that...
This interesting circuit found in a European publication from the 1990s eliminates the voice that...