Browse Prior Art Database

Single Shot

IP.com Disclosure Number: IPCOM000095476D
Original Publication Date: 1964-Jan-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 36K

Publishing Venue

IBM

Related People

Butler, SA: AUTHOR [+3]

Abstract

The single shot has blocking oscillator 10, tunnel diode 11, time determining RC network, and diode 12 composed of high energy gap material. The RC network and diode 12 are part of the regenerative feedback loop. Windings 13 and 14 in the collector and emitter circuits of amplifying transistor 15 are transformer coupled and produce oscillations.

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Single Shot

The single shot has blocking oscillator 10, tunnel diode 11, time determining RC network, and diode 12 composed of high energy gap material. The RC network and diode 12 are part of the regenerative feedback loop. Windings 13 and 14 in the collector and emitter circuits of amplifying transistor 15 are transformer coupled and produce oscillations.

Oscillations of the amplifier circuit cease whenever the regenerative feedback loop is interrupted. This takes place by applying a +12 V pulse to the Input terminal. This pulse charges the capacitor of the RC network so that diode 12 becomes heavily, reversely biased. With the RC network thus isolated, the discharge time is solely determined by the time required for the charge on the capacitor C to discharge through resistor R. As the charge leaks off, a level is reached where diode 12 enters a region of high susceptance enabling oscillations to commence.

Tunnel diode 11 produces a voltage rise at the Output terminal which defines the non-oscillating period of the blocking oscillator. Between t1 and t2 the circuit 10 is oscillating. Tunnel diode 11 is in its high voltage state varying between points b and b'. Upon applying the input pulse (interval t2-t3), the voltage across diode 11 is reduced to zero. Consequently, diode 11 switches to its low voltage state, point a, at the termination of the last cycle of oscillation. This raises the voltage at the Output terminal from approximately +11.5 V to +12 V. Since ...