This filter circuit for active frequency divider applications was published in the December 1957 Radio Electronics magazine. The supply voltage is indicated.
This circuit was obtained in the magazine Eletronica Prática 9 of 1977. The Italian magazine no...
This circuit was found in the 1960 Mullard transistor reference manual. The circuit can be...
The circuit presented may use any general purpose transistor. The indicator is an LED and...