Circuit for generating triangular waveform having relatively...

Details Circuit for generating triangular waveform having relatively... Circuit for generating triangular waveform having relatively...

2008-09-25

2010-11-16

Tso, Edward (Department: 2858)

Electricity: battery or capacitor charging or discharging

Battery or cell charging

Pulsed

C320S139000, C320S145000, C327S131000, C327S134000, C327S135000, C327S137000, C327S140000, C363S020000, C363S021010, C363S021080, C363S021100

Reexamination Certificate

active

07834592

ABSTRACT:
A circuit includes a pulse transformer having primary and secondary windings. An oscillating waveform is applied to the primary winding to induce an oscillating waveform at the secondary winding. A transistor in series with a first resistor is coupled between the secondary winding and the ground. An R-C network formed by a second and a third resistor and a capacitor is coupled to a base junction of the transistor. The R-C network causes a slow, tapered linear pinch off of the transistor's conductance to enable the circuit to output a triangular waveform, which is characterized by a relatively short linear rise time followed by a substantially long linear fall time. The R-C network is coupled to the secondary winding via a first and a second diode, respectively.

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