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12 Volt Alarm Power Supply: (Electronic Schematic / circuit added 4/02) |
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12 Volt DC Power Supply: (Electronic Schematic / circuit added 4/02) |
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12 Volt to 9 Volt DC Converter: Car Converter for12 Volt to 9V (Electronic
circuit added 5/02) |
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12V 30A Power Supply: Using a single 7812 IC voltage regulator and multiple
outboard pass transistors, this power supply can deliver output load currents of up to
30 amps. (Electronic circuit added 4/05) |
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13.8 Volt 20PSU: This is a Regulated DC power supply with short circuit
protection and with current limiter. (added 6/03) |
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16 bit adjustable reference uses 8 bit digital potentiometers: 12/25/03 EDN
Design Ideas / (added 09/05) It may be easy to find a precision
voltage reference for your application; however, a programmable precision reference is
another matter. The circuit in Figure 1 yields a precision reference with an LSB of
62.5 µV. The circuit is a 16-bit DAC using three 8-bit digital potentiometers and
three CMOS op amps.... |
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1Variable Regulated Power Supply: (added 2/05) |
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230 Volt Dimmer: FAIR WARNING - THIS SITE HAS ANNOYING POP UPS (circuit /
schematic added 2/03) |
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2-Step Voltage Regulation Improves: Design Notes (Linear Technology) (added 01/06):
DN209 - Design Notes (Linear Technology) (added 1/06) |
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300 W PWM Amplifier (with stuffing option): This reference design allows
customers with limited knowledge of digital audio amplifiers to quickly build
solutions, which meet Dolby, EMI and FTC standards, reducing the time-to-market for
new consumer audio products. This 6 channel reference design, based on the TDA8925ST
and TDA8926J power stages, is available with an output power of 3 x 100 W.
(circuit design added 3/05) |
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3-Terminal Regulator is Adjustable: National Semiconductor - Application
Note (app note added 2/06) |
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4-20 mA Digital-to-Process Current Transmitter: AN-21 - Analog Devices
Application Note (app note added 2/06) Describes a 3 I.C. Digital to 4-20
mA Current Output Circuit (DAC08, REF01 and OP221) |
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4MHz Monolithic Synchronous Step-Down Regulators Bring High Efficiency to
Space-Sensitive Applications: DN304 - Design Notes (Linear Technology)
(added 1/06) |
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5 Volt Power Supply: (added 9/03) |
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5 W Universal Input Dual Output Isolated TNY266: This design kit is a 5 W
Universal Input Dual Output Isolated power supply using the TNY266 chip.
(circuit design added 3/05) |
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78xx Regulator Board: circuit board and circuit for making voltage
regulators based on 78xx ICs, in PDF format, text in Finnish (Electronic circuit added
5/02) |
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9 Volt 2PSU: A simple 9 Volt 2 amp supply using a single IC regulator.
(added 6/03) |
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9 Volt Stabilized Power Supply: (Circuit added 9/04) |
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9V 2PSU: A simple 9 Volt 2 amp supply using a single IC regulator.
There is little to be said about this circuit. All the work is done by the regulator.
The 78S09 can deliver up to 2 amps continuous output whilst maintaining a low noise
and very well regulated supply. The circuit will work without the extra components,
but for reverse polarity protection a 1N5400 diode is provided at the input, extra
smoothing being provided by C1. The output stage includes C2 for extra filtering, if
powering a logic circuit than a 100nF capacitor is also desirable to remove any high
frequency switching noise. (added 11/05) |
