Control circuit for bar graph display panel

Details Control circuit for bar graph display panel Control circuit for bar graph display panel

1977-07-13

1978-08-29

Smith, Alfred E.

Electric lamp and discharge devices: systems

Plural power supplies

Plural cathode and/or anode load device

340324M, H05B 3700, H05B 3900, H05B 4100

Patent

active

041106652

ABSTRACT:
A control circuit for bar graph display panels is described which reduces the tendency to drift, which obviates the necessity of maintaining an absolutely constant oscillator frequency and an absolutely constant ramp rate by utilizing a feedback system to reference the ramp end points to a single precise voltage.

REFERENCES:
patent: 3967158 (1976-06-01), Saxon
patent: 4009414 (1977-02-01), Bockett-Pugh

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