Charge transfer circuit with voltage threshold compensating mean

Details Charge transfer circuit with voltage threshold compensating mean Charge transfer circuit with voltage threshold compensating mean

1977-11-17

1979-12-25

Sloyan, Thomas J.

Communications: electrical

Audible indication

Percussion-type sound producer

307221C, 307221D, 357 24, 340347M, 340347NT, H03K 1320

Patent

active

041808070

ABSTRACT:
A charge transfer circuit of the type including first and second capacitors separated by a charge transfer MOSFET is disclosed. The disclosure includes the description of a circuit which compensates for variations in the threshold voltage of the charge transfer MOSFET such that the magnitude of the charge packet transferred from the first to the second capacitor is substantially independent of changes in the magnitude of the threshold voltage.

REFERENCES:
Bernadotte et al., Bucket Brigade Devices Arranged for Dividing Analog--IBM Technical Disclosure Bulletin, vol. 18, No. 8, 1/1976, p. 2540.

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