Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Rectangular or pulse waveform width control
Patent
1995-12-01
1998-04-14
Cunningham, Terry
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Rectangular or pulse waveform width control
327132, 327172, 332110, 332111, H03K 3017
Patent
active
057397112
ABSTRACT:
A circuit suitable for use in a regulated bi-directional output power supply requiring controlled transitions between states, such as in a Battery Polarity Switch is provided to utilize many of the same circuit components in regulating both opposing polarities of the output signal. An exemplary circuit achieves use of a single error amplifier and pulse width modulator circuit to obtain both positive and negative regulation of the battery polarity switch output, along with controlled transition between the two states. In a specific embodiment a logic inverter allows the single pulse width modulator to control in both directions. A ramped reference fed to the error amplifier allows the same amplifier to control the transitions.
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Cunningham Terry
Lucent Technologies - Inc.
Steinmetz A. G.
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