Plessey Handel Und Investments A.g.

John David Wilcock

John F Dickson

An MOST buffer circuit has a first normally non-conductive transistor in series with a second normally conductive transistor between earth and a main power supply. A normally discharged bootstrap capacitor is connected between the common connection point of the two transistors and the gate of the first transistor. In response to an input signal, the transistor is switched on, the transistors conduct in series, and the bootstrap capacitor charges. The transistor is then switched off, ceasing the series current and developing an output potential which approximates to that of the power supply.

Electrical integrated circuit chips

An information store comprising (a) a known latching circuit which comprises cross connected metal-oxide-silicon transistors and metal-nitride-oxide-silicon transistors and which is accommodated on an integrated circuit chip to which only earth and negative power is supplied, and (b) control means, positive potential for erasing being developed by applying earth and negative potentials selectively to input terminals of the control means, the control means comprising a resistor in series with a capacitor, and an output terminal at the junction of the resistor and capacitor.

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Northampton, United Kingdom

John David Wilcock