Published:2009/7/20 20:46:00 Author:Jessie
Remote shutdown regulator(+5 volts)with current limiting using an ECG915 or ECG915D.For a ±5% fixed output resistor R1 is 2,15 ohms and R2 is 4.99 ohms.Resistor RSC is 10 ohms(courtesy GTE Sylvania Incorporated). (View)
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Published:2009/7/20 20:44:00 Author:Jessie
Positive voltage regulators for 5, 6, 12, 15, or 24 volts using the ECG9XX series.Rating for the three-terminal ECG9XX positive voltage regulators are as follows: ECG960, 5 volts; ECG962, 6 volts; ECG966, 12 volts; ECG968, 15 volts; and ECG972, 24 volts. A common ground is required between the input and output voltages. The input voltage must remain typically 2 volts above the output voltage even during the low point on the ripple (courtesy GTE Sylvania Incorporated). (View)
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Published:2009/7/20 23:34:00 Author:Jessie
First and second mixer stages for a 27 MHz CB receiver. Note that these two stages replace three in conventional receivers not employing dual-gate MOSFETs (courtesy Texas Instruments Incorporated). (View)
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Published:2009/7/20 23:32:00 Author:Jessie
Line-type modulator uses silicon diodes for high-voltage rectifiers, backswing, holdoff, and inverse-diode circuits. Trigger generator uses two-layer and four-layer diodes to provide pulse burst repetition rates up to 25 kc.-H. G. Heard, Controlled Rectifier Produces Quarter-Mega watt Pulse Power, Electronics, 34:25, p 54-55. (View)
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Published:2009/7/20 21:34:00 Author:Jessie
5-volt 40-ampere power inverter supply (courtesy Motorola Semiconductor Products Inc.). (View)
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Published:2009/7/20 21:32:00 Author:Jessie
Combination of backward diode and resistor network serves as reference for regulated outputs below 6 v, for which temperature -compensated zener diodes are not available. Provides input regulation of 100:1 over 10% change in input voltage, with output impedance of 0.04 ohm. -T. P. Sylvan, Backward-Diode Power-Supply Reference Elements, EEE, 13:11, p 46-48. (View)
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Published:2009/7/20 21:31:00 Author:Jessie
Digitally programmed power supply. A D/A convener with an op amp supplies voltage in accordance with a digital code (courtesy Analog Devices, Inc.). (View)
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Published:2009/7/20 21:30:00 Author:Jessie
Output of 12 to 16 v is regulated within 1% for loads of 6 to 22 ma. Since 2D21 can handle 100 ma continuously, circuit is easily modified to regulate higher current values.-W. D. Fryer, Thyratron Regulates Supply, Electronics, 31: 25, p 88. (View)
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Published:2009/7/20 21:30:00 Author:Jessie
Direct-line-operated power supply for line-operated servo amplifier (courtesy Motorola Semiconductor Products Inc.). (View)
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Published:2009/7/20 21:29:00 Author:Jessie
Provides regulated +12 and -12 v from 24-v supply Negative feedback loop permits circuit to furnish unbalanced currents up to 700 ma in either direction without changing output voltages more than 10 my.-J. M. Kasson, Voltage Splitter Balances Floating Power Supply, Electronics, 39:6, p 96. (View)
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Published:2009/7/20 21:29:00 Author:Jessie
10-volt reference with 4-ampere capacity using an AD581 and a 2N6040 (courtesy Analog Devices, Inc.). (View)
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Published:2009/7/20 21:28:00 Author:Jessie
Power supply for line-operated servo amplifier using a power transformer (courtesy Motorola Semiconductor Products Inc.). (View)
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Published:2009/7/20 21:06:00 Author:Jessie
24-volt DC regulated power supply with 500 mA rating. Output ripple is less than 4.5 mV. R2 can be changed to obtain other secondary output voltages as desired (courtesy General Electric Company). (View)
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Published:2009/7/20 21:05:00 Author:Jessie
Variable output voltage regulator using the μA79HG, which can supply a minimum of 5 amperes at voltages from -2.3 volts to -24 volts (courtesy Fairchild Semiconductor). (View)
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Published:2009/7/20 21:04:00 Author:Jessie
Step-down switching regulator using an SH1605. Output voltage is +5 volts. Available current is between 1 and 5 amperes. Input voltage is 12 to 18 volts. Line regulation is 2% with load regulation at 2%. Maximum ripple is 0.1 volt peak to peak (courtesy Fairchild Semiconductor). (View)
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Published:2009/7/20 21:03:00 Author:Jessie
Programmable power supply with ±100-volt and ±50-volt output (courtesy Analog Devices, Inc.). (View)
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Published:2009/7/8 23:49:00 Author:May
Permits operation of high-quality FM tuner from amplifier supply without having hum due to positive feedback through shared ground connection.Circuit provides up to 90 mA at 12 V from any supply ranging from 24 to 34 V. Low output impedance eliminates all likely sources of feed-back and suppresses ripple. Circuit requires careful initial adiustment to limit current sunk by 741C opamp to Iess than 15 mA; coarse adjustment is made by varying number of 47-ohm resistors in parallel serving as BD136 omitter re-sistor, and fine adjustment by changing R2.-G.Hibbert, Avoiding Power Supply Hum, Wireless Wolld, Oct. 1973, p 515. (View)
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Published:2009/7/20 20:58:00 Author:Jessie
10-volt reference from a 12-volt suppy(courtesy Analog Devices,Inc.). (View)
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Published:2009/7/20 20:57:00 Author:Jessie
Circuit using single quad opamp measures relative change in con-centration of salt solution by monitoring its conductance. Use of alternating current through solution eliminates errors caused by electrolysis effect. Wien-bridge oscillator having R4C1 and R4R3 as arms of bridge generates 1-kHz signal for driving amplifier A2 through solution. P1 controls oscillator amplitude, and P2 adjusts gain of A2. A3-A4 form precision rectifier giving output voltage equal to absolute value of input voltage.-M. Ahmon, One-Chip Conductivity Meter Monitors Salt Concentration, Electronics, Sept. 15, 1978, p 132-133. (View)
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Published:2009/7/20 20:56:00 Author:Jessie
Precision 10-volt reference with fine trim adjustment (courtesy Analog Devices, Inc.). (View)
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