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Additional Pictures 

 

Clock Frequency vs External Capacitor of a µPD276 single-chip calculator circuit.
DUT: µPD276C H55049 @ VDD = -6.0 V, VGG = -12.0 V.

Clock Frequency vs VDD Supply Voltage of a µPD276 single-chip calculator circuit.
DUT: µPD276C H55049 @ VGG = -12.0 V, CEXT = 82 pF.

Clock Frequency vs VGG Supply Voltage of a µPD276 single-chip calculator circuit.
DUT: µPD276C H55049 @ VDD = -6.0 V, CEXT = 82 pF.


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© Joerg Woerner, November 29, 2024. No reprints without written permission.