|
|
|
+5V Power Supply Circuit - This circuit is a small +5V power
supply, which is useful when experimenting with digital electronics. Small
inexpensive wall tranformers with variable output voltage are available from
any electronics shop and supermarket. Those transformers are easily
available, but [Tomi Engdahl's design] |
|
0 to 30 Volt Lab Supply - (electronic schematic / circuit added
4/02) |
|
1.2 Volt Reference - National Semiconductor Application Note
04-Nov-1995 / (app note added 8/03) |
|
1.2-15V/3A adjustable regulated power supply - …. [Site is under
construction right now] |
|
1.3V Power Supply - This is a replacement power source for 1.3V
mercury cells or other small batteries. It has many uses and I use this
circuit in my computer to power a front panel multi adapter which has a
digital thermometer… [Aaron Cake's design] |
|
1.5A High Efficiency Synchronous Switching Regulator Evaluation Board -
evaluation board is designed to supply 3.3V at 15 mA up to 1.5A. input
voltage range is 4V to 14V. Components were selected based on design
procedure in LM2651 datasheet. PCB layout is critical to reduce noise
and ensure…. (app note added 3/05) |
|
|
|
12 Volt 30 Amp Power Supply (Andy Collinson) - uses a single 7812 IC voltage
regulator and multiple outboard pass transistors, this power supply can deliver output
load currents of up to30 amps.... [Circuit Design by Andy Collison] |
|
12 Volt Alarm Power Supply - A 12 Volt power suppiled designed for Ron's
Modular Burglar Alarm. However, being a popular supply voltage this circuit will have
many other uses as well….(circuit / schematic design added 6/06) |
|
12 Volt to 9 Volt DC Converter - Car Converter for12 Volt to 9V ….
|
|
12V 30A PSU - 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 10/09) |
|
13.8 Volt 20A PSU - This is a Regulated DC power supply with short circuit
protection and with current limiter. (added 6/03) |
|
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) |
|
13.8V 20A PSU - This is a Regulated DC power supply with short circuit
protection and with current limiter. (electronic design added 6/07) |
|
16-bit adjustable reference uses 8-bit digital potentiometers - 25-Dec-03
Issue of EDN 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....
[Design Idea by Bonnie Baker, Tucson, AZ] |
|
1A Variable Regulated Power Supply - A 'must-have' for the experimenter.
(electronic design 05/09) [from Peter Parker's website] |
|
2 AA cells power step-down regulator - 01/07/99 Issue of EDN DC/DC
conversion is particularly challenging when both the input and output voltages are
low. Step-up ICs that operate with inputs lower than 1V are available, but step-down
ICs that accept input voltages....Page includes several designs. Scroll to find
this one.... [Design Idea by Len Sherman, Maxim Integrated Products, Sunnyvale, CA] |
|
232 Volt Dimmer - Find out how to put together a simple but efficient PWM
dimmer circuit for LEDs…. [REUK - Renewable Energy UK website] |
|
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] |
|
2-Step Voltage Regulation Improves: Design Notes Linear Technology added 01/06 -
DN209 Design Notes (Linear Technology) (app note added 1/06) |
|
3-Terminal Regulator is Adjustable - National Semiconductor Application Note
(app note added 2/06) |
|
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) |
|
4-20 mA Digital-to-Process Current Transmitter - AN-21 Analog Devices
Application Note....[App Note]Describes a 3 I.C. Digital to 4-20 mA Current Output
Circuit (DAC08, REF01 and OP221) |
|
4MHz Monolithic Synchronous Step-Down Regulators Bring High Efficiency to
Space-Sensitive Applications - DN304 Design Notes (Linear Technology)
(app note added 1/06) |
|
5 Volt Power Supply - (electronic circuit added 9/03) |
|
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) |
|
555 on 24v - If you need to operate a 555 on 24v, you will need to reduce
the voltage to less than 18v. The following circuits reduce the voltage to 12v….
|
|
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) |
|
78xx Regulator Board - circuit board and circuit for making voltage
regulators based on 78xx ICs, in PDF format, text in Finnish (added 5/02) |
|
9 Volt 2 Amp Power Supply - A simple 9 Volt 2 amp supply using a single IC
regulator. (added 6/03) |
|
9 Volt Stabilized Power Supply - Circuit only, no discription is
included…. [Tony van Roon's circuit] |
|
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) |
|
|
