|
Regulated Power
Supply Circuits, Page 3
Last Updated on:
Monday, October 03, 2011 06:08 PM
Regulated Power Supplies:
#-A B-H
I-W |
|
|
Links to electronic circuits, electronic schematics, designs for engineers,
hobbyists, students & inventors:
|
|
|
|
Increasing Regulator Current - An outboard pass transistor used to
increase the current output of a voltage regulator IC….(added 01/2010) [Andy
Collison - designer] |
|
Line Power Supply - This circuit provides a regulated output without a
power transformer. It is similar to common circuits, except that a zener diode
is replaced with an SCR. This is far more robust against line voltages
surges than a zener diode version, plus there is no heat generation. C1 sets the
available current (20mA/uF @ 60Hz). R3 sets the output voltage (~.55V/K). The
bipolar outputs are separately adjustable by R3 and R5. Designed by Andrew R.
Morris (added 09/05) |
|
LM317 Regulator with Pass Transistor - The LM317T output current can
be increased by using an additional power transistor to share a portion of the
total current. The amount of current sharing is established with a resistor
placed in series with the 317 input and a resistor placed in series with the
emitter of the pass transistor. In the figure below, the pass transistor will
start conducting when the LM317 current reaches about 1 amp, due to the voltage
drop across the 0.7 ohm resistor.... [Bill Bowden] |
|
|
|
LM5068-48V Hot Swap Controller - National Semiconductor Application Note....[App
Note] |
|
Low Battery Voltage Cutout Circuits - Circuit for model railroad trains…. [from
Rob Paisley's Model Train web site] |
|
Low Voltage Hot Swap Controller Ignores Backplane Noise & Surges - DN319
Design Notes (Linear Technology) (app note added 6/06) |
|
LT1120A-Micropower Regulator with Comparator & Shutdown - Linear Technology
Switching Regulator (app note added 09/09/09) |
|
LT3465-1.2MHz White LED Step-Up Converters with Built-In Schottky in ThinSOT -
Linear Technology LT3465 Switching Regulator (app note added 09/09/09) |
|
LT3465A-2.4MHz White LED Step-Up Converters with Built-In Schottky in ThinSOT -
Linear Technology Switching Regulator (app note added 09/09/09) |
|
LTC1645 Dual Channel Hot Swap Controller/Power Sequencer - DN217 Design
Notes (Linear Technology) (app note added 6/06) |
|
LTC1646: Power Supply Isolation Controller Simplifies Hot Swapping the CompactPCI Bus for
5V-/3.3V-Only Applications - DN253 Design Notes (Linear Technology) (app
note added 6/06) |
|
Micropower Regulator with Comparator & Shutdown - Linear Technology Switching
Regulator (app note added 09/09/09) |
|
Philips PW 4029 regulated power supply schematic - (circuit added 04/05/06)
|
|
Regulated 12V Supply (Mick Devine) - This circuit above uses a 13 volt zener
diode, D2 which provides the voltage regulation. Aprroximately 0.7 Volts are dropped
across the transistors b-e junction, leaving a higher current 12.3 Volt output supply.
This circuit can supply loads of up to 500 mA. This circuit is also known as an
amplified zener circuit.... |
|
Safe Hot Swapping using the LTC1421 - DN139 Design Notes (Linear
Technology) (app note added 6/06) |
|
Simple VCOM adjustment uses any logic supply voltage - 30-Sep-04 Issue of EDN
All TFT (thin-film-transistor] LCD panels require at least one appropriately tuned VCOM
signal to provide a reference point for the panel's backplane. The exact value of VCOM
varies from panel to panel, so the manufacturer must program the voltage at the factory to
match the characteristics of each screen.... [Design Idea by Peter Khairolomour and Alan
Li, Analog Devices, San Jose, CA] |
|
Soft Start power Supply - Circuit designed by Miroslav Adzic. The output voltage
rises slowly and reaches 15 V in 5 seconds. In order to perform this soft-start
function, the LM317 voltage regulator IC requires an external universal PNP transistor and
the L200 uses its internal comparator (pin 2). After switch-on, the rising voltage
on the positive side of the charging electrolytic....(added 10/05) |
|
Stabilised power unit - I made the stabilised power unit which used the
switching regulator. AC100 V is used for the input of the power unit. The output voltage
can be changed from 5 V to 30 V. The output current can pour a maximum of 4 A. I made this
power unit as the power unit of the electronic circuits making for the
experiment....(schematic added 05/08) |
| Two 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] |
|
UltraLow Noise Switching Power Supplies Simplify EMI Compliance - DN316
Design Notes (Linear Technology) (app note added 1/06) |
|
Universal PSU - Circuit designed by Volker Jeschkeit. A Universal Power
supply based on the L200 regulator, which includes an outboard pass transistor to boost
output currents up to 4 amps. (added 11/05) |
|
VCOM Adjustment uses Any Logic Supply Voltage - 09/30/04 EDN-Design Ideas....All
TFT (thin-film-transistor]LCD panels require at least one appropriately tuned V COM signal
to provide a reference point for the panel's backplane. The exact value of V COM varies
from panel to panel, so the manufacturer must program the voltage at the factory to match
the characteristics of each screen.... EDN is migrating links. This link is not verified.
Google the "title" EDN for new link. |
|
Voltage Regulator - Simple regulated12V power supply using1-transistor regulator
circuit. Designed by Mick Devine (added 5/02) |
|
Wide-range regulator delivers 12V, 3A output from 16 to 100V source - 23-Jun-05
Issue of EDN Buck regulator tackles high input voltages.... [Design Idea by Wayne
Rewinkel, National Semiconductor, Schaumburg, IL; Edited by Brad Thompson and Fran
Granville] |
|
|
|
Regulated Power Supplies:
#-A B-H
I-W |
