12 Volt to 9 Volt DC Converter: Car Converter for12 Volt to
9V |
2 Watt Switching Power Supply: from 6V to14V
|
5 Volt DC From RS232 Signals: The circuit of Figure1
produces a semi-regulated5-Volt output from an RS-232 port.
Unlike a PC-mouse supply or comparable that rely on the
modem-control signals DTR and RTS, this one operates with
a3-wire port GND, Rx, and TX, and obtains power only from the TX
line. The output current-about 8mA-is sufficient for CMOS
microcontrollers and other low-power . |
6 to 12 Volt Converter: This circuit can provide up to 800mA
of12V power from a 6V supply. The circuit is simple, about 75%
efficient and quite useful. |
Circuit offers improved active rectification: 02/06/03 EDN-Design
Ideas / Rectifiers convert ac signals to dc. You can combine a
diode and a load resistor to create a half-wave rectifier,
provided that the amplitude of the ac source is much larger than
the forward drop of the diode (typically 0.6V). Unfortunately,
you can't use this method to rectify signals that are smaller
than a diode drop... |
DC to DC Converter: will produce a 85-Volt voltage from +3V,
usable for low power applications |
Fast Rectifier Circumvents Input Level Effects: 12/22/94 EDN-Design
Ideas |
Full Wave Rectifier uses Current Feedback Amps: 03/27/97 EDN-Design
Ideas |
Full Wave Rectifier uses Current Feedback Amps: 07/20/95 EDN-Design
Ideas |
High Speed Rectifier uses No Diodes: 03/30/95 EDN-Design
Ideas |
Method provides self timing for synchronous rectifiers:
05/16/2002 EDN - Design Ideas / Synchronous rectifiers are
MOSFETs, driven in such a way as to perform a rectifying
function. They often take the place of diodes in the
output-rectification stage of switching power converters,
because of their lower on-state power loss. In power circuits,
synchronous rectifiers are often complicated to use because of
timing issues.. |
One 9 Volt Battery gives +18, +25, +33V: This circuit is
based on MAX1044 is a charge pump converter.
|
OpAmp Rectifier Signals Input State: 07/21/94 EDN-Design
Ideas |
Output Adjustable Flyback Converter: |
Precision AC / DC Converters: National Semiconductor
Application Notes,28-Jun-1996 |
Precision Rectifier is Glitch Free to 1 MHz: 05/12/94 EDN-Design
Ideas |
Precision Rectifier Reduces Ripples: 03/03/97 EDN-Design
Ideas |
Step Down Rectifier Makes a Simple DC Power Supply: 04/09/98
EDN-Design Ideas / A simple and useful nonisolated rectifier
features voltage step-down operation, acceptable Class A
line-current harmonics, inherent short-circuit protection, and,
optionally, a regulated output
|
Transformerless Mains Power Supply: This power supply does
not really excel in power efficiency, but it is the cheapest and
most compact solution for a small power supply. Note that the
low voltage output is directly connected to the mains; it cannot
be used when the low voltage part can be touched. With the
component values of the schematic, the circuit can supply12V
/15mA max. |
Transformerless Power Supply: |
True RMS
Detector: National Semiconductor Application
Notes,28-Jun-1996 |
Two OpAmps Make Fast Full Wave Rectifier: 03/14/96 EDN-Design
Ideas |
Two Watt Switching Power Supply: from 6V to14V
|
Unregulated Power Supply: |