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National Semiconductor Dual High-Current Power Supply Kit - The National
Semiconductor Power Supply Kit is designed around the National LM2636, a synchronous
buck regulator. It provides over 28 amps of current with variable output voltages
ranging from +1.3V to +3.3V. (added 3/05) |
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Negative Flyback with V in 12 V and V out-5 V - This reference design is for a
-12V at 1A Negative Flyback Converter. The UC3572 converts a positive input voltage to
a regulated negative output voltage. The chip is optimized for use in a single
inductor negative flyback switching converter employing an external PMOS switch.
(added 3/05) |
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Negative Regulator has <04 Volt Dropout Voltage - 11/07/97 EDN-Design Ideas:
(design idea added 6/03) |
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New High Efficiency Monolithic Synchronous Step-Down Regulator Works with Single or
Dual Li-ION Batteries - DN201 Design Notes (Linear Technology) (app note
added 1/06) |
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New Micropower Low Dropout Regulators Ease Battery Supply Designs - DN121
Design Notes (Linear Technology) (app note added 2/06) |
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New Production Technique for Trimming Voltage Regulators - National Semiconductor
Application Note (app note added 6/06) |
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New Voltage References Are Smaller and More Precise - DN145 Design Notes
(Linear Technology) (app note added 1/06) |
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NiMH Battery Charger Reference Design - This manual describes a reference design
for a NiMH battery charger that uses the Motorola MC68H(R)C908JK3E MCU. The
MC68H(R)C908JK3E includes a 10-channel Analog-to-Digital Converter (ADC) and a
2-channel Timer Module ….(app note added 3/05) |
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Nine-Volt Stabilized Power Supply - (Tony van Roon's circuit added 9/04) |
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OpAmp Makes Precise 9 Volt Battery Splitter - 07/17/97 EDN-Design Ideas:
-Alkaline 9V batteries are ideal for many portable, handheld applications, this
circuit generates a bipolar supply of5V and 2.3 to 4V using a precision5V reference
and one op amp as a supply splitter.....(design idea added 3/03) |
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Over/Under Voltage Cut-Out - This over/under voltage cut-out will save your costly
electrical and electronic appliances from the adverse effects of very high and very
low mains voltages. The circuit features auto reset and utilises easily available
components. It makes use of the comparators available inside 555 timer ICs..
(added 11/05) |
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Pass Regulator's Output Ranges from 0 to 20V - 04/13/95 EDN-Design Ideas:
(design idea added 3/03) |
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Pass Transistor Lowers Dropout Voltage - 02/18/99 EDN-Design Ideas: With
linear regulators,you measure dropout voltage, VIN–VOUT, at the minimum input voltage
for which the IC sustains regulation. Low dropout means longer battery life, because
the load circuit continues to operate while the battery discharges to a lower terminal
voltage.....(design idea added 6/03) |
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Peltier Devices or Thermoelectric Modules. - Also known as TE Modules or Solid
State Heat Pumps....(circuit design added 12/08) |
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Portable CD Player Adapter for Car (Aaron Cake) - Whenever I'm in the car
listening to my favourite CD, it always happens-my batteries go dead. To solve that
problem, I built this extremely simple regulator circuit. It steps down the 12V from
the lighter socket to 9V which is used by the CD player....(electronic circuit added
5/02) |
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Positive regulator makes dual negative output converter - 06/26/03 EDN-Design
Ideas: Some systems, such as optical networks, require more than one negative
voltage. A common procedure is to boost the main negative supply of -5V to -10V and
then reduce it with a linear regulator to -9V. The -5V itself comes from a positive
supply, typically 5 or 12V. Independently creating each of the two negative voltages
requires the use.....(design idea added 1/05) |
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Positive regulator makes negative DC/DC converter - 12/26/02 EDN-Design Ideas:
Power-supply designers can choose from a plethora of available positive buck
regulators that can also serve as negative boost dc/dc converters. Some buck
regulators have a negative-feedback reference voltage expressly for this purpose, but
ICs that have positive-reference feedback voltages far outnumber these
negative-feedback regulators.....(design idea added 1/05) |
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Power over Ethernet:Sync Flyback Reference Design - This reference design presents
an alternative to the typical boost power regulator. A buck converter IC is used to
generate a higher voltage needed by the white light LED power from a Ni-Cd battery.
This circuit operates by turning the high switch on, connecting the battery voltage
across the inductor..... (added 3/05) |
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Power Supply - (circuit / schematic added 6/05) |
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Power Supply Circuit Tracks Control Input - 12/21/95 EDN-Design Ideas:
(design idea added 3/03) |
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Power Supply Converted from a PC link - Electronic circuit (added 9/04) |
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Power-miserly voltage reference needs just one pin - 08/20/09 EDN-Design Ideas: A
capacitor holds a reference voltage so that the microcontroller pin can perform other
tasks.....(design idea added 08/09) |
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Power-Supply Failure Alarm - (electronic Circuit / Schematic added 10/04) |
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Precision reference bans precision resistors - 06/10/99 EDN-Design
Ideas:.....(design idea added 2/06) |
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Precision Reference uses Only Ten Microamperes - National Semiconductor
Application Note (app note added 2/06) |
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Proportional thermoregulator synchronizes to line - 04/13/00 EDN-Design
Ideas:.....(design idea added 2/06) |
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Protection Feature Enhances Boost Converter - 10/27/94 EDN-Design Ideas: A
boost-topology switching regulator is the simplest solution for converting a twoto
three-cell input to a 5V output. Unfortunately, boost regulators have several inherent
disadvantages, including a lack of short-circuit protection and shutdown capability.
In some battery-operated products, external.....(design idea added 3/03) |
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RD68HC908IRC : MC68HC908QT2 Based Simple Infrared Remote Control Reference Design
- Motorola has developed a simple, single dedicated device, infrared remote control
designed to control a DVD player. This reference design demonstrates how to time and
create modulated infrared signals used to control six basic functions of the DVD
player. (app note added 3/05) |
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RD68HC908LBC : Li-ION Battery Charger Reference Design - This reference design
describes a Li-ion battery charger for one 3.6V Li-ion battery cell by using the low
cost 8-pin MC68HC908QT2 MCU. This reference demo provides reader a reference on how to
implement constant current, constant voltage charging method for Li-ion battery and
how to in-circuit-programming M68HC908QT/QY MCU in system (app note added 3/05) |
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Rearranged reference helps ADC measure its own supply Voltage - 04/28/05 EDN-Design
Ideas: Clever topology allows self-measurement of power supply rail.....(design
idea added 5/05) |
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Reduce voltage reference output noise by half - 02/03/05 EDN-Design Ideas:
Reducing low-frequency (1/f)noise generated by an IC voltage reference can prove
difficult. In theory, adding a lowpass filter to a reference's output reduces noise.
In practice, a lowpass RC filter for suppression of noise frequencies below 10 Hz
requires large values of series resistance and shunt capacitance.....(design idea
added 5/05) |
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Reference Design for the TAS5110DAD Digital Audio PWM Power Output Stage - The
true digital audio amplifiers (TDAA) system consists of a PCM–PWM modulator device and
a PWM power output device. The PCM–PWM processor accepts a serial PCM digital audio
stream and converts it to a 3.3-V PWM audio stream. The TDAA output stage provides a
large-signal PWM output. The digital PWM signal....(added 3/05) |
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References for A/D Converters - National Semiconductor Application Note
04-Nov-1995/ (app note added 3/03) |
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Regulated 12 Supply - This circuit above uses a 13 volt Zener diode, D2 which
provides the voltage regulation. Approximately 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. (added 10/05) |
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Regulated 12v PSU - (schematic / circuit added 6/07) |
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Regulated 12V supply - (electronic circuit added 04/05) |
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Regulated DC Power Supply - many power supply designs for different voltages,
built from discrete components/ (added 3/03) |
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Regulator Circuit Generates Both 3.3V and 5V Outputs from 3.3V or 5V to Run Computers
and RS-232 - DN71 Design Notes (Linear Technology) (app note added 1/06) |
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Regulator Excels in Noise and Line Rejection - 01/02/97 EDN-Design Ideas:
-Certain electronic circuits require extremely low-noise power supplies and this
circuit provides very good quality power output.....(design idea added 3/03) |
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Regulator Generates SubBandgap Voltages - 01/02/97 EDN-Design Ideas:
--100-mA regulator that uses a dual linear-regulator IC to produce output voltages
below1.25V from2.9 to5.5V input-voltage range.....(design idea added 3/03) |
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Regulator has One Active Part - 03/16/95 EDN-Design Ideas: (design idea
added 03/03/03) |
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Regulator IC forms convenient overvoltage detector - 09/28/00 EDN-Design
Ideas:.....(design idea added 11/05) |
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Regulator Makes Dual Tracking Reference - 11/07/96 EDN-Design Ideas: (design
idea added 3/03) |
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Regulator Monitors Its Input Voltage - 09/12/97 EDN-Design Ideas: (design
idea added 3/03) |
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Regulator Provides ±12V from 5V Source - National Semiconductor Application Note
(app note added 2/06) |
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RFRXD0420 ASK Receiver Reference Design - Microchip Application Note Published
27-Dec-02 (app note added 2/06) |
