Station selecting apparatus

Details Station selecting apparatus Station selecting apparatus

H - Electricity

03

J

365/13

H03J 3/18 (2006.01) H03J 5/02 (2006.01) H03J 5/24 (2006.01) H04B 1/16 (2006.01)

Patent

CA 1158373

ABSTRACT OF THE DISCLOSURE A station selecting apparatus comprises a preset signal generating circuit comprising a charging/discharging circuit including a parallel connection of a variable resistor and a capacitor and being adapted to generate a pulsive preset signal having a pulse width determined as a function of a discharging time constant of the above described charging/discharging cir- cuit. A semi-fixed resistor is connected between the variable resistor of the preset signal generating circuit and the ground for the purpose of defining the minimum pulse width of the pre- set signal and a further semi-fixed resistor is connected in parallel with the variable resistor for the purpose of defining the maximum pulse width of the preset signal.

372665

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