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12 Volt to 9 Volt DC Converter - Car Converter for12 Volt to 9V (Tony van Roon's
electronic design added 5/02) |
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13 Volt 30 Amp Power Supply - uses a single 7812 IC voltage regulator and multiple
outboard pass transistors, this power supply can deliver output load currents of up
to30 amps (added 5/02) |
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13.8 Volt 20A PSU - This is a Regulated DC power supply with short circuit
protection and with current limiter. (added 6/03) |
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13.8V 20A Power Supply - As is commonly the case, this supply was born of
necessity. There is absolutely nothing special about the circuit, except that as
shown, it is quite capable of up to 20 Amps intermittently or 10A continuous. Simply
use a bigger transformer, bridge rectifier and more capacitors and output transistors
to get more current. The basic circuit should be good for up to 100A or so, using a 5A
TO3 regulator IC, but it can obviously be increased further (if you really do need a
500A supply!). ….(design added 11/08) |
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13.8V 20A PSU - This is a Regulated DC power supply with short circuit protection
and with current limiter. (electronic design added 6/07) |
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15 Volt Alarm Power Supply - (electronic schematic / circuit added 4/02) |
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16 bit adjustable reference uses 8 bit digital potentiometers - 12/25/03 EDN-Design
Ideas: It may be easy to find a precision voltage reference for your
application; however, a programmable precision reference is anor matter. circuit
in Figure 1 yields a precision reference with an LSB of 62.5 µV. circuit is a
16-bit DAC using three 8-bit digital potentiometers and three CMOS op amps.....(design
idea added 09/05) |
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1A Variable Regulated Power Supply - A 'must-have' for the experimenter.
(electronic design 05/09) |
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230 Volt Dimmer - FAIR WARNING THIS SITE HAS ANNOYING POP UPS (added 2/03) |
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240VAC To 5VDC Power Supply - This is simple way to power some 5v logic from a
240vac source. If a 120vac power adapter is used, the circuit will also work
for 120vac power lines. ….(designed by David A. Johnson) |
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2-Step Voltage Regulation Improves: Design Notes Linear Technology added 01/06 -
DN209 Design Notes (Linear Technology) (app note added 1/06) |
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3-Terminal Regulator is Adjustable - National Semiconductor Application Note
(app note added 2/06) |
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40V 2A LM317 & TIP42 Power Supply - A very good and powerful Regulated Power
Supply section was implemented by simply adding a PNP power transistor to the
excellent LM317T adjustable regulator chip. In this way this circuit was able to
deliver much more than the power required to drive two Mini-MosFet amplifiers to full
output (at least 2Amp @ 40V into 4 Ohm load) without any appreciable effort.
….(electronic schematic added 11/08) |
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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) (app
note added 1/06) |
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5 Volt Power Supply - (electronic circuit added 9/03) |
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5 Watt Universal Input Dual Output Isolated TNY266 - This design kit is a 5 W
Universal Input Dual Output Isolated power supply using TNY266 chip.
(added 3/05) |
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78xx power supply - Of all the voltage regulator ICs, the 78xx family is by far
the most established. Not surprisingly! It's difficult to get performance this good
with so few outside components necessary. Just like the famous LM317, the 78xx family
incorporates…(added 04/05/06) |
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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 (added 5/02) |
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9 Volt 2 Amp Power Supply - A simple 9 Volt 2 amp supply using a single IC
regulator. (added 6/03) |
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9 Volt Stabilized Power Supply - (Tony van Roon's circuit added 9/04) |
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9V to 2A PSU - A simple 9 Volt 2 amp supply using a single IC regulator.
There is little to be said about this circuit. All work is done by
regulator. The 78S09 can deliver up to 2 amps continuous output whilst maintaining a
low noise and very well regulated supply....(added 11/05) |
