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Rectifier Circuits

Rectifiers:  #'s - B      C - N      O - S      T - Z


Last Updated: December 02, 2017 06:18 AM
Circuits Designed by Dave Johnson, P.E. :

10mhz to 20mhz Laser Light Detector -  This circuit was originally designed to detect laser light pulses for an optical Ethernet communications system.  It has good ambient light immunity. . . Circuit by David Johnson P.E.-June, 2000

12kv Power Supply -  If you need about 12, 000 volts DC for an ion generator this circuit might be the ticket.  It draws power from the 120vac power line but it uses a small 6KV camera flash trigger coil.  The output signal is isolated from the power line. . . Circuit by David A. Johnson P.E.-March, 1999

12v Cooling Fan Thermostat -  This circuit will turn on a 12v DC powered cooling fan when the air temperature reaches a certain high temperature and will keep the fan turned on until the temperature drops below a second lower level.  Both the high and low temperatures are both adjustable. . . Circuit by David A. Johnson P.E.-February, 2011

18v AC to DC Power Supply -  This is a classic linear power supply which produces a regulated 18v, rated at about 1 amp. . . Circuit by David Johnson P.E.-July, 2006

24 Volts AC to 24 Volts DC Power Supply -  The idea for the circuit below came from a company needing to power several 24v DC LED assemblies from an existing 24vac supply.  They did not need a rock solid and regulated 24 volts but a voltage which hovered around that voltage.  Running the AC through . . . Hobby Circuit designed by Dave Johnson P.E.-February, 2011

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. . . Circuit by Dave Johnson P.E.-February, 2002

24V DC Powered Beeper with 4 Separate Inputs -  24vac is a popular voltage.  It is often used in low voltage lighting systems and industrial controls.  It is much less dangerous than 120vac/240vac line voltages.  This hobby circuit below is one method to efficiently power a cluster of 7 white LEDs from 24vac. . . . Hobby Circuit designed by Dave Johnson P.E.-December, 2009

24-Volt AC Powered Isolated +5V Supply -  24vac is a very popular power supply in many industrial systems.    It is often used in systems that involve water.    It is also popular with many inside and outside lighting systems.    The lower voltage means the danger of human electrocution is much less. . . . Hobby Circuit designed by David Johnson P.E.-July, 2009

4-20ma Current Loop Tester -  This circuit injects an adjustable current through a wire loop.  Using a digital current meter, the current can be adjusted from near zero to over 24 milliamps. . . Circuit by Dave Johnson P.E.-May, 2012

9v Battery Eliminator -  If you use 9v battery powered devices for long periods of time, you may get tired of constantly changing batteries.  The circuit below can be wired into any 9v battery powered device, drawing power from an external AC to DC power adapter.  I designed the circuit. . . Circuit by David A. Johnson P.E.-December, 2009

Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:

13,8volt 12/20/22A Power supply with BDX33 or 2N3055 -  This is an easy to make power supply which has stable, clean and protected output voltage.  The overall dimensions can be kept (relative) small by using TO220 darlington BDX-33 transistors.  Using 3 BDX-33 darlington transistors is almost 3 times the amount of amps then the power supply delivers, making it real though to brake ;).  Although you could use this design to deliver 20 amps (with almost no modifications and with a proper transfo and a huge heat sink with a fan) , I did not needed such much power. __ Designed by Guy Roels ON6MU

13,8volt heavy duty 30 Ampere Powersupply -  Ham Radio - Power Supplies - Schematic __ Designed by Guy Roels ON6MU

13.8 Volt, 20 Ampere linear power supply -  A semi-traditional power supply for communication equipment, using negative-rail regulation with grounded pass transistors in a configuration that gives some unique advantages. __ Designed by Manfred Mornhinweg

13.8 Volt, 40 Ampere switching power supply -  A heavy duty, highly efficient, small and lightweight power supply specially designed for use with communication equipment.  This article was originally published in the QST magazine.  includes text, schematic diagram, printed circuit board layout, and some photos.   __ Designed by Manfred Mornhinweg

13.8V 20A Power Supply -  Regulated DC power supply, short circuit safe, and with current limiter.  This PSU has been especially designed for current-hungry ham radio transceivers.  it delivers safely around 20Amps at 13.8V.  For lower currents, a separate current limiting output, capable of 15ma up to a total of 20A has been added.  Let us see what we have got here.  The power transformer should be capable to deliver at least 25A at 17.5 to 20V.  The lower the voltage, the lower power dissipation.   __ Designed by Bob

13.8V 30-40A Power Supply -  Schematic only, a powerfull power supply for my amateur radio equipment using four HEX FET transistors for regulation.  Text can be found at: http://www. Agurk.dk/bjarke/Projects/PowerSupplyFET/PowerSupplyFET.htm __ Designed by Bjarke Korsgaard

13cm power Amplifier -  Schematic only, no circuit description __ Designed by © 2001 - YO5OFH, Csaba Gajdos

18v AC to DC Power Supply -  This is a classic linear power supply which produces a regulated 18v, rated at about 1 amp. . . Circuit by David Johnson P.E.-July, 2006

1A Variable Regulated Power Supply -  A 'must-have' for the experimenter. __ Designed by Peter Parker VK3YE

1W HF QRP -  Schematic only, no circuit description __ Designed by © 2001 - YO5OFH, Csaba Gajdos

2 Op Amps Provide Averaged Absolute Value -  30-Oct-03 EDN Design Ideas:  The circuit in Figure 1 is useful when you need amplitude demodulation or an averaged absolute-value conversion.  The circuit comprises two stages, the first of which, IC 1A, is a differential-output absolute-value converter.  The second stage, IC 1B, is a traditional differential amplifier.  The combination of the two stages performs single-ended absolute-value conversion but only if R3>>R2 __ Circuit Design by Dobromir Dobrev, Jet Electronics, Sofia, Bulgaria

2.5-50V power supply for universal use based on a LT1074 -  This project describes a little power supply, based on a LT1074, adjusteable from 2.5 to 50 V, delivering much more than 1 Amp. __ Designed by Alexander C. Frank, aka Ajarn Changpuak

20 Amp (peak) power supply for SSB transceivers -  A heavy duty 13.8V power supply is a fine thing to have in the shack, but unless you acquire one secondhand, is an expensive little beastie to buy.  This means building one should be considered, not only for the cost savings, but also because you can brag about it on air to your mates.  Of course, careful consideration must be given to the properties of the completed supply, and after talking to a few of my friends who have built their own and fallen into all the traps, here are the printable ones : RF proof, easy to make, commonly available parts used, but above all CHEAP. __ Designed by VK5JST / VK5TR

200 Watt Modified PC Power Supply 13.5 Volt 14 Amp -  The external 230 Volt AC power ON/OFF switch is removed and bypassed Old unused outputs are removed.  Over voltage protection changed to only protect one output at 16 V, Voltage regulating resistor net changed to only monitor a single output __ Designed by OZ2CPU; Thomas from Denmark

200W ATX PC Power Supply -  This power supply has ATX design and 200W performance.  I was drawed diagram, when I repaired this power supply.  This power supply circuit uses chip TL494.  Similar circuit is used in the most power supplies with output power about 200W__ 

23cm 20W PA with M57762 -  Schematic only, no circuit description __ Designed by © 2001 - YO5OFH, Csaba Gajdos

23cm 40W PA with M57762 -  Schematic only, no circuit description __ Designed by © 2001 - YO5OFH, Csaba Gajdos

24 Volts AC to 24 Volts DC Power Supply -  The idea for the circuit below came from a company needing to power several 24v DC LED assemblies from an existing 24vac supply.  They did not need a rock solid and regulated 24 volts but a voltage which hovered around that voltage.  Running the AC through . . . Hobby Circuit designed by Dave Johnson P.E.-February, 2011

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. . . Circuit by Dave Johnson P.E.-February, 2002

24V DC Powered Beeper with 4 Separate Inputs -  24vac is a popular voltage.  it is often used in low voltage lighting systems and industrial controls.  it is much less dangerous than 120vac/240vac line voltages.  This hobby circuit below is one method to efficiently power a cluster of 7 white LEDs from 24vac. . . . Hobby Circuit designed by Dave Johnson P.E.-December, 2009

24-Volt AC Powered Isolated +5V Supply -  24vac is a very popular power supply in many industrial systems.    it is often used in systems that involve water.    it is also popular with many inside and outside lighting systems.    The lower voltage means the danger of human electrocution is much less. . . . Hobby Circuit designed by David Johnson P.E.-July, 2009

25W QRO with PL504 -  Schematic only, no circuit description __ Designed by © 2001 - YO5OFH, Csaba Gajdos

26V-to-5000V DC-DC Converter -  This circuit can provide 5, 000 VDC from 26 VDC.  This circuit has ripple of under 0.01% due to Voltage-doubling capacitors.  As sinusoidal oscillator, a 2N217 transistor is used.  The diode and the capacitors at the output stage should be of high voltage type.  __ 

2A power supply-An adjustable power supply for Model railways & general projects -  This handy power supply has an output of 0v to 12v at 700mA with a transformer that is rated at 1-amp (such as M-2155) or 1.4amp for a transformer that is rated at 2-amp (such as M-2156).  Your local electronics shop or model railway supply will have these __ Designed by Collin Mitchell

2m power Amplifier -  Schematic only, no circuit description __ Designed by LA0 DF9PY

2-Op Amps Provide Averaged Absolute Value -  10/30/03  EDN Design Ideas:  The circuit in Figure 1 is useful when you need amplitude demodulation or an averaged absolute-value conversion.  The circuit comprises two stages, the first of which, IC 1A, is a differential-output absolute-value converter.  The sec __ Circuit Design by Dobromir Dobrev, Jet Electronics, Sofia, Bulgaria

3 Phase Bridge Rectifier -  Find out about three phase bridge rectifiers.   __ Designed by REUK-Renewable Energy UK website

3.3V Regulated Power Supply -  Among the power supplies presented here, this is a well regulated type that can deliver up to 1.5A current from a wide range of input voltage of 5V to 25V dc.  See LM317 calculator if you want to know how to get the 3.3 V output.   __ Designed by KB Kaminski

350W QRO with GK71 for 160-15m -  Schematic only, no circuit description __ Designed by © 2001 - YO5OFH, Csaba Gajdos

3-Phase Rectifier & Voltage Reducer form a Offline Single-Phase Supplies -  EDN-Design ideas -- 04/06/12    Missing diodes create gaps to allow voltage reduction. __ Circuit Design by JB Castro-Miguens, Cesinel, Madrid, Spain; C Castro-Miguens, University of Vigo, Spain; M Pérez Suárez, University of Vigo, Spain; and A Abal Pena, Tekplus, Vigo, Spain

4-20ma Current Loop Tester -  This circuit injects an adjustable current through a wire loop.  Using a digital current meter, the current can be adjusted from near zero to over 24 milliamps. . . Circuit by Dave Johnson P.E.-May, 2012

432 MHz kilowatt Amplifier -  Schematic only, no circuit description __ Designed by W1QWS

5 volt power supply -  Schematic only, no circuit description __ Designed by Andy Wilson

500mW HF Linear Amplifier -  his project was a particular surprise for me in that the BC547 (equiv 2N2222) can be used to build a 500mW linear amplifer covering the entire HF band with excelent spectral purity and no neutralising at all.  Ugly-bug construction was used but I dare say that the good results are partly to do with the method of construction. __ Designed by Harry Lythall-SM0VPO

500W Low cost 12V to 220V inverter -  Using this circuit you can convert the 12V dc in to the 220V Ac.  in this circuit 4047 is use to generate the square wave of 50hz and amplify the current and then amplify the voltage by using the step transformer.   __ Designed by Ashad Mustufa

500W Mos-Fet Power Inverter from 12V to 110V/220V  -  This circuit will provide a very stable "Square Wave" Output Voltage.  Frequency of operation is determined by a pot and is normally set to 60 Hz.  Various "off the shelf" transformers can be used.  Or Custom wind your own FOR BEST RESULTS.  Additional MOSFETs can be paralleled for higher power.  it is recommended to Have a "Fuse" in the Power Line and to always have a "Load connected", while power is being applied.  The Fuse should be rated at 32 volts and should be aproximately 10 Amps per 100 watts of output.  The Power leads must be heavy enough wire to handle this High Current Draw! .  __ 

50MHz power Amplifier -  Schematic only, no circuit description __ Designed by JH0WJF

50V 3A Stabilized Power Supply with 2N3055 -  Many times we needed a stabilized, together regulated power supply and high relatively output voltage.  These specifications him it cover our circuit.  it 's a circuit that can give in his exit + 40V until + 60V 3A, with simultaneous stabilization.  The materials that use is very simple and will not exist difficulties in the manufacture, is enough you are careful certain points.1 ] For output voltages smaller of + 50V until + 40V, the Q1 is hot enough, so that it needs one big heatsink.  __ 

5W QRP with KT907 -  Schematic only, no circuit description __ Designed by © 2001 - YO5OFH, Csaba Gajdos

6 to 12 Volt Converter -  This circuit can provide up to 800mA of12V power from a 6 Volt supply.  The circuit is simple, about 75% efficient and quite useful __ Designed by Aaron Cake

600 Volt Power Supply -  Simple 600 Volt DC power supply.  Convert 230V AC to 300V and 600V DC.  __ 

60W AC-DC Flyback Converter -  Universal AC line input Fully assembled and tested power supply with DC containing all design documentation Features: 0-4A ioutAT15V, 87% efficiency at high line, Short Circuit protection, Over Voltage protection__ 

78H05 based portable 13,8volt power supply ideal for FT-817 and similar -  Ham Radio - Power Supplies __ Designed by Guy Roels ON6MU

80m hexfet power Amplifier -  Schematic only, no circuit description __ Designed by W7ZOI

80V Linear rectifier is Micropower -  DN314 Design Notes __ Linear Technology/Analog Devices

90W AC-DC Flyback Converter -  Fully assembled and tested power supply with DC containing all design documentation Features: Universal AC line input, 0-6A ioutAT15V, 83% efficiency at high line, Short Circuit protection, Over Voltage protection__ 

9v Battery Eliminator -  if you use 9v battery powered devices for long periods of time, you may get tired of constantly changing batteries.  The circuit below can be wired into any 9v battery powered device, drawing power from an external AC to DC power adapter.  I designed the circuit. . . Circuit by David A. Johnson P.E.-December, 2009

9-V Stabilized Power Supply -  Schematic only __ Designed by Tony van Roon  VA3AVR

9-Volt Battery Eliminator -  for guitar pedals, radios etc __ Designed by G. Forrest Cook

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Rectifiers:  #'s - B      C - N      O - S      T - Z


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