This circuit can use a pendulum sensor. We found this configuration in a 1994 publication. The components used are common and the timing is given by the capacitor C1 which can be changed.
This receiver receives signals in the 17 MHz or 11-meter range and can be used as a base for an...
This low-frequency noise filter of the turntable motor was found in Radio Electronics from the...
In the figure we have 3 oscillators with logic gates that can be triggered by external logic...