Switching circuit for radiosonde

Details Switching circuit for radiosonde Switching circuit for radiosonde

1978-09-11

1980-07-22

Griffin, Robert L.

Telecommunications

Transmitter

Mobile or portable

340177R, H04B 1034

Patent

active

042142075

ABSTRACT:
A radiosonde comprising a transmitter, a modulating oscillator, a control circuit for the oscillator and sensing elements to be switched into and out of said control circuit, characterized in that a solid state switching circuit is utilized for switching the sensing elements into and out of said control circuit to produce atmospheric information signals and with the sensing elements out of the control circuit there is produced a reference signal which reflects essentially the same impedance from the solid state switching circuit as is reflected in the atmospheric information signals thereby providing for evaluation of the information signals.

REFERENCES:
patent: 2381009 (1945-08-01), Siderman
patent: 2790967 (1957-04-01), Mlynczak
patent: 3132301 (1964-05-01), Siderman et al.
patent: 3273066 (1966-09-01), Ruhnke
patent: 3649877 (1972-03-01), Friedman et al.

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