power supply circuit

LOW_COST_VOLTAGE_REGULATOR

Published:2009/7/20 21:24:00 Author:Jessie

Costs 5 to 7 times less than toner regulator having same power rating. Can be set at precise voltage value required, whereas zener has 5 or 10% tolerance. Uses IN462 silicon diode for reference. Total cost (in quantity) is less than two dollars. Thermistor makes circuit perform from -55 to 71°C. Input voltage source is sea-water-activated batttery.-M. E. Gavin, Low Cost Transistor Voltage Regulator, EEE, 10:8, p 28-29.   (View)

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BASIC_SERIES_PASS_REGULATOR

Published:2009/7/20 21:23:00 Author:Jessie

Output volt-age is regulated by 2N37l5 series-pass sill con power transistor having rise and fall limes below 0.5 microsec at 5 amp. Transistor has wide safe-area range, but circuit otherwise has no overload protection.-J. Takesuye and H. Weber, Silicon Power Transistors Provide New Solutions to Voltage Control Problems, Motorola Application Note AN-163, Aug. 1965.   (View)

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BALANCED_INPUT_PENIODE_TWIN_IRIODE

Published:2009/7/20 21:58:00 Author:Jessie

Balanced input stage reduces effects of tube aging and heater voltage change. Plate load of 16,500 ohms on output pentode contributes to excellent frequency response. Neither reference tube nor comparison voltage divider are loaded. Gives outstanding over-all performance.-NBS, Handbook Preferred Circuits Navy Aeronautical Electronic Equipment.” 1, Electron Tube Circuits, 1963,p N2-4.   (View)

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TEMPERATURE_COMPENSATED_ZENER

Published:2009/7/20 21:56:00 Author:Jessie

Reference voltage is compared to 27-v output by dual-chip transistor serving as error amplifier. Unique end-compensation circuit using sensistor generates voltage that rises with temperature.-C. H. Moulton, Light Pulse System Shrinks High-Voltage Protection Device, Electronics, 38:11, p 71-75.   (View)

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NEGATIVE_OUTPUT_300_V_REGULATOR

Published:2009/7/20 21:54:00 Author:Jessie

Operation is comparable to corresponding positive-output circuit.-NBS, Handbook Preferred Circuits Navy Aeronautical Electronic Equipment, Vol. 1, Electron Tube Circuits, 1963, p N2-5.   (View)

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NEGATIVE_OUTPUT_152_V_REGULATOR

Published:2009/7/20 21:53:00 Author:Jessie

Operation is comparable to corresponding positive-output circuit.-NBS, Handbook Preferred Circuits Navy Aeronautical Electronic Equipment, Vol. 1, Electron Tube Circuits, 1963, p N2-5.   (View)

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DARLINGTON_TRANSISTOR_SERIES_REGULATOR

Published:2009/7/20 22:05:00 Author:Jessie

Integrated transistor and zener diode in reference amplifer act with 2N2795 Darlington transistor to hold 50-ma output to within less than 0.001% of 12 v over 10% variation in a-c line voltage.-T. P. Sylvan, New Device Simplifies Power Supply Design, Electronics, 36:20, p 39-43.   (View)

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REFERENCE_AMPLIFIER_TESTS_POWER_SUPPLY_STABILITY

Published:2009/7/20 22:03:00 Author:Jessie

Integrated transistor and tenor diode serve as reference amplifier for testing effects of temperature on output voltage. After amplifier is heated or cooled, voltage divider is adjusted to restore initial collector current, and change in reference voltage is read from voltage divider scale to within 1 my.-T. P. Sylvan, New Device Simplifies Power Supply Design, Electronics, 36:20, p 39-43.   (View)

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PENTODE_WITH_RIPPLE_SUPPRESSION

Published:2009/7/20 22:02:00 Author:Jessie

Screen is fed jointly from regulated and unregulated sides of supply, to reduce ripple. Plate load is low (100,000 ohms), providing good frequency response but increasing current fluctuations in VR-105.-NBS, Handbook Preferred Circuits Navy Aeronautical Electronic Equipment, Vol. 1, Electron Tube Circuits, 1963, p N2-2.   (View)

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VOLTAGE_TUNABLE_MAGNETRON_FILAMENT_SUPPLY

Published:2009/7/20 22:00:00 Author:Jessie

Voltage drop across 1-ohm resistor, proportional to output current, is compared with fixed reference and held constant by series pass element.-S. Prigozy, Designing Special Power Supplies for Voltage-Tunable Oscillators, Electronics, 35:44, p 48-50.   (View)

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SIMPLE_SERIES_REGULATOR

Published:2009/7/20 21:59:00 Author:Jessie

Satisfactory for power supplies that are not subjected to shorted, capacitive, or suddenly increased loads. Any capacitance C1 at load must be charged through Q2, so entire supply voltage appears across Q2 before C1 starts charging. If initial charging current exceeds limits of Q2, it will be damaged immediately or become unstable.-H. D. Ervin, Transistor Power Supply has Overload Protection, Electronics, 31:25, p 74-75.   (View)

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6_V_at_20_A

Published:2009/7/20 21:50:00 Author:Jessie

Constant-voltage ferrores-onant transformer with full-wave silicon rectifiers is supplemented by shunt transistors driven by error signal from zener-reference sensing circuit.-J. r. Keefe, Transformer and Shunt Transistors Regulate D-C Power Supply, Electronics, 34:20, p 99-101.   (View)

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Operational_amplifier_±15_volt_1_ampere_power_supply

Published:2009/7/20 21:50:00 Author:Jessie

Operational amplifier ±15-volt 1-ampere power supply. The ECG968 and ECG969 positive and negative regulators can be connected as shown to obtain a dual power supply. A clamp diode should be used at the output of the ECG968 to prevent latch-up problems. The regulators have thermal-overload and short-circuit protection. The input capacitors should be 0.33 μF if tantalum or Mylar, or 1.0μF if aluminum. Bypassing the output is also recommended. The same type of dual power supply can be constructed with other ratings of the ECG9XX series of regulator. Ratings are as follows: ECG960, +5 volts; ECG961, -5 volts; ECG962, +6 volts; ECG963,-6 volts; ECG966, +12 volts; ECG967,-12 volts; ECG968; +1 5volts, ECG969,-15 volts; and ECG972, +24 volts (courtesy GTE Sylvania Incorporated).   (View)

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320_V_AT_60_MA

Published:2009/7/20 21:49:00 Author:Jessie

Silicon diodes in full-wave bridge feed seven-transistor regulator. Temperature-compensated silicon-junction zenet diode is basic reference element. Output is constant within 50 my, for use with digital-analog converter.-N. Aron, Precise Converter takes Current Analog of Digital voltage Pulses, Electronics, 35:32, p 68-71.   (View)

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80_watt_switching_regulator_supply_for_CATV_applications_with_24_volt_3_ampere_output

Published:2009/7/20 21:47:00 Author:Jessie

80-watt switching regulator supply for CATV applications with 24-volt 3-ampere output. This circuit operates above 18 kilohertz from a 40- to 60-volt 60-hertz square wave or from a DC standby source with input/output isolation (courtesy Motorola Semiconductor Products Inc.).   (View)

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PENTODE_WITH_CONSTANT_REFERENCE_CURRENT

Published:2009/7/20 21:45:00 Author:Jessie

screen is fed directly from regulated voltage of shunt-regulating supply using VR-105 and VR-150 reference lubes to give -300 v.-NBS, Handbook Preferred Circuits Navy Aeronautical Electronic Equipment, Vol. 1, Electron Tube Circuits, 1963, p N2-2.   (View)

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Line_operated_inverter_with_15_volt_DC_225_watt_output_

Published:2009/7/20 21:44:00 Author:Jessie

Line-operated inverter with 15-volt DC 225-watt output (courtesy Motorola Semiconductor Products Inc.).   (View)

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TWIN_TRIODE_CASCADE_1

Published:2009/7/20 21:43:00 Author:Jessie

Smaller load resistor improves frequency response. Both reference tube and comparison divider are loaded.-NBS, Handbook Preferred Circuits Navy Aeronautical Electronic Equipment, Vol. 1, Electron Tube Circuits, 1963, p N2-3.   (View)

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CURRENT_LIMITING_SUPPLY_WITH_REFERENCE_AMPLIFIER

Published:2009/7/20 21:41:00 Author:Jessie

Variable 8 to 25-v supply limits output to 100 mc for protection against short-circuits. Regulation is 0.02% for line voltages from 105 to 130 v.- Transistor Manual, Seventh Edition, General Electric Co., 1964, p 232.   (View)

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DUAL_POLARITY_VARIABLE_D_C_SUPPLY

Published:2009/7/21 5:55:00 Author:Jessie

Diagonally symmetrical power transistor circuit permits smooth load current variation over range of several amperes at either polarity. Rectifier supply can be used in place of storage batteries. Maximum current drain from two 12-V dry cells in 5K potentiometer control circuit is 7 ma.-R. R.Bockemuehl, Transistor Rectifier Gives D-C of Either Polarity, Electronics, 32:25, p 76.   (View)

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