Oscillator frequency switching circuit for remote control transm

Details Oscillator frequency switching circuit for remote control transm Oscillator frequency switching circuit for remote control transm

1975-12-08

1976-10-26

Grimm, Siegfried H.

Oscillators

With frequency adjusting means

Step-frequency change

178DIG15, 325 37, 331117R, 331185, 340 15, H03B 512, H03J 532, H04B 1100

Patent

active

039887014

ABSTRACT:
A remote control transmitter utilizing single-pole, single-throw switches for connecting frequency determining capacitors and a battery in circuit with an LC oscillator is shown. The switches can be push-button type switches which close a pair of contacts. The battery is connected in circuit with the oscillator by a semiconductor switch which is closed by closure of any one of the push-button switches. Diodes isolate the frequency determining capacitors from each other.

REFERENCES:
patent: 3100886 (1963-08-01), Marks
patent: 3678392 (1972-07-01), Houghton
patent: 3705363 (1972-12-01), Okada et al.
patent: 3949297 (1976-04-01), Hideshima

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