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Controlled Ferroresonant Power Supply Circuit With Linear Gain

IP.com Disclosure Number: IPCOM000085923D
Original Publication Date: 1976-Jun-01
Included in the Prior Art Database: 2005-Mar-03
Document File: 2 page(s) / 42K

Publishing Venue

IBM

Related People

Higuchi, HA: AUTHOR [+2]

Abstract

This controlled ferroresonant transformer power supply circuit is more readily controlled than prior art arrangements.

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Controlled Ferroresonant Power Supply Circuit With Linear Gain

This controlled ferroresonant transformer power supply circuit is more readily controlled than prior art arrangements.

The transformer and the associated circuitry are shown schematically. Alternating potential is applied at input terminals 33, 34. One terminal 33 is connected to the primary winding sections 22, 24 by isolating diodes 36, 38, respectively. The other terminal 34 is connected to the common central terminal of the windings 22, 24. Secondary windings 27, 28 are connected to a full-wave rectifier circuit having rectifying diodes 42, 44 for delivering direct potential to a pair of output terminals 46, 48.

The control winding 30 is connected between the cathode electrodes of the rectifying diodes 42, 44 and the terminal 48 by an adjustable resistor 50. A smoothing capacitor 52 is connected across the terminals 46, 48. A bleeder resistor 54 is optional.

The resonating windings 27', 28' are connected to a capacitor 40 by isolating or decoupling diodes 56, 58 as shown. These diodes perform in much the same manner as the diodes 36, 38.

The basic theory of operation of ferroresonant transformers (constant-voltage stabilizers) is well established. This circuit utilizes the same principles except that the net change in magnetic flux density per half cycle of the saturating transformer core 20 is now linearly controlled with diodes 56 and 58 in the circuit.

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