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1 kV Power Supply produces a continuous arc - 02/05/04 EDN-Design Ideas: Designing
a high-voltage switching power supply that can produce a sustained arc can be
challenging. This compact and efficient design delivers 1 kV at 20W and can withstand
a continuous arcing, or short-circuit, condition.....(design idea added 1/05) |
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1 to 300 Volt Adjustable Power Supply - This is a simple circuit that can provide
an adjustable voltage source of0 to330 Volts. supply is short-circuit proof:
current is limited to about100mA. (added 4/02) |
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10 Amp 13.8 Volt Power Supply - Just like other commercial units, this circuit
uses the LM723 IC which gives us excellent voltage regulation. The circuit uses 3 pass
transistors which must be heat sinked….(electronic design added 6/07) |
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12KV High Voltage Generator - The hobby circuit below uses an unusual method to
generate about 12,000 volts with about 5uA of current. Two SCRs form two pulse
generator circuits. The two SCRs discharge a 0.047uF a 400v capacitor through a
xenon lamp trigger coil at 120 times a second. The high voltage pulses produced
at the secondary of the trigger coil are rectified using two 6KV damper diodes.
The voltage doubler circuit at the secondary of the trigger coil charges up two high
voltage disc capacitors up to about 12KV. Although this circuit can’t produce a
lot of current be very careful with it. A 12KV spark can jump about 0.75 of an
inch so the electronic circuit needs to be carefully wired with lots of space between
components. ….(designed by David A. Johnson) |
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14 VDC to 120 VAC Inverter - Ever needed a low power 120volt AC power source
for your car, van or truck? Well this circuit should do the trick for you. It will
supply 15 watts of AC power to a device. It should power lamps, shavers, small stereos
and small appliances. If you draw to much power the circuit will shut down all by
itself. The output....(added 09/05) |
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25 k Volt Generator Tests Insulation - 05/21/98 EDN-Design Ideas: (design idea
added 3/03) |
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4k Volt 5k Volt 2000VAC Power Supply - These transformers are 120VAC input with
2kVAC output. Just wire the cores together (the cores are normally one of the HV
terminals) and wire the primaries so they oppose eachother. If you don't get a nice
arc from this switch the input leads on one transformer. This will not arc over that
far, but if you start a small arc you can pull it out to about 5". These transformers
will make an excellent supply for a Jacob's ladder.... (added 08/08) |
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A Momentary High Voltage Arc Circuit - Can be used to Ignite a barbeque or a Gas
in a Potato Gun....(design added 12/08) |
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A Single Amplifier Precision High Voltage Instrument Amp - DN25 Design Notes
(Linear Technology) (app note added 6/06) |
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An Electric Fence project - A Very Efficient and Simple Cmos Design....(design
added 12/08) |
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AN-H35: HV441: High Voltage Ring Generator - Supertex Semiconductors (app note
added 6/06) |
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AN-H37: HV440 High Voltage Ring Generator - Supertex Semiconductors (app
note added 2/06) |
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APD Bias Circuit has Adjustable Output - 05/22/97 EDN-Design Ideas: / PDF contains
multiple circuits, scroll to find this circuit.....(design idea added 4/02) |
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APD bias circuit has adjustable output - 05/22/97 EDN-Design Ideas: (design idea
added 11/05) |
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Build the Lightning Bulb - (Tony van Roon's electronic design / schematic added
2/06) |
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Circuit delivers high Voltage Swing from Lower supplies - 12/12/02 EDN-Design
Ideas: The need for higher voltage swings in applications such as test-and-measurement
instruments is constantly increasing, but the power supplies impose limitations on the
operational amplifier rails make the high-voltage need a challenge for designers. How
do you deliver high-voltage swings to a load without increasing the voltage
levels.....(design idea added1/05) |
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Cockcroft Walton Diode Voltage Multipliers - this document describing some basic
voltage multiplier circuit topologies, PDF file (added 4/02) |
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Convert Atari-style Joystick to PC Joystick Port - Some games are easier to play
with digital joystick instead of analogue type. Unfortunately PC has only analogue
joystick connector, which makes it impossible to connect normal digital joystick to
it. But with a little adapter circuit, it is possible to use Atari style digital
joystick with IBM PC joystick interface. The circuit adapts the joystick connectors
and converts digital joystick movement signals to analogue signals…(added 05/05/05) |
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Current Sense Amplifier Handles High Voltages - 11/06/97 EDN-Design Ideas: (design
idea added 6/06) |
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Easy Xenon DC-to-DC Converters! - (design circuit added 8/02) |
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Electronic Dazer - (circuit / schematic design added 6/06) |
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Electronic Dazer (Rick Duker) - The dazer is considered an illegal firearm in
Canada, except for use by speciality forces and law enforcement. Unless for
laboratory experimentation, having it in your possession is the same as having an
illegal gun or a gun without the proper FAC permits. It is presented here for
educational and experimental purposes only as part of our High-Voltage Projects. (Tony
van Roon's electronic schematic / circuit added 08/09) |
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Electronic Dazer ~rstevew - The Electronic Dazer is a modern, portable,
personal-protection appliance. It generates hight potential energy to ward off vicious
animals or other attackers. It is an aid to help exape from a potentially dangerous
situation. the device develops about 2,000 volts. Higher voltages mabe be attained by
adding aditional multiplier stages, but it should be noted that those stage will also
increase the overal size of the unit.
The Dazer is very compact, being built into a small plastic case. It is powered by a
single 9-volt battery, either NiCad or alkaline. (Editor's Note: the so-called 9-V
NiCad actually provides only about 7.5V. Why? NiCad cells only give 1.25 per cell. 6
cells in a 9volt battery gives it 7.5V and so the Alkaline type would be a better
choice). (added 9/04) |
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Even Cheaper & Simpler Ion Chamber - Here is a really simple version of the above
chamber that is surprisingly sensitive for its simplicity. It uses the same coffee can
as above but only one transistor. Here are step-by-step instructions for constructing
this really easy-to-build version….(added 04/05/06) |
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HeNe Laser Power Supply (Aaron Cake) - (circuit added 7/02) |
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High & Low Voltage Cut Off With Time Delay - The power line fluctuations and
cut-offs cause damages to electrical appliances connected to the line. It is more
serious in the case of domestic appliances like fridge and air conditioners. If a
fridge is operated on low voltage, excessive current flows through the motor, which
heats up, and get damaged.….(electronic schematic added 08/08) |
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High Current LM317 Regulated Power Supply - The high current regulator below uses
an additional winding or a separate transformer to supply power for the LM317
regulator so that the pass transistors can operate closer to saturation and improve
efficiency. For good efficiency the voltage at the collectors of the two parallel
2N3055 pass transistors should be close to the output voltage. ….(design added 11/08) |
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High Current Power Supply - Since my page was first posted, I have received a
number of emails asking about a high current power supply. I looked around, but
couldn't find one that was suitable. So, I designed this. It is a linear supply, which
might have a few of you rolling your eyes, but it takes very few parts, is simple to
build and can supply huge currents. ….(electronic schematic added 11/08) |
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High Voltage Adjustable Power Supplies - National Semiconductor Application
Notes,28-Jun-1996 (app note added 4/02) |
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High voltage Amplifier Drives piezo tubes - 12/07/04 EDN-Design Ideas:
Piezoelectric tubular positioners that drive manipulators in scanning tunneling
microscopes require high-voltage, low-current drive circuits. The circuit in Figure 1
can drive high-resistance, low-capacitance piezoelectric loads at a -3-dB bandwidth of
6 kHz. It offers a low-cost alternative to commercial drivers.....(design idea added
10/05) |
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High Voltage Amplifier uses simplified circuit - 10/14/04 EDN-Design Ideas: Many
scientific instruments and sensors need ac high-voltage drive. High-voltage drive is
useful for driving electrodes in many applications. The challenge is to boost the
output of a conventional op amp to high voltages. Available ac high-voltage amplifier
modules are limited to approximately 1200V p-p.....(design idea added 5/05) |
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High Voltage Breakdown Tester - (Not for beginners!) The following circuit
is used to determine the breakdown voltage of electronic components without causing
permanent damage. The circuit quickly ramps the high voltage up from zero and stops
when the leakage current reaches a preset amount up to 100 uA. When power is
applied the two-transistor flasher circuit drives the
complimentary-symmetry....(electronic circuit added 7/03) |
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High Voltage Electronic Dazer - (schematic / circuit added 10/02) |
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High Voltage Generator (Charles Wenzel ) - The simple circuit can be used at very
low frequencies, RF frequencies, low voltages, or even very high voltages with careful
selection of transistors. The power handling capability and power consumption are also
easily modified to suit the requirement.....(added 7/03) |
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High voltage generator (Domenico Di Mario) - Easy to build, this high voltage
generator is capable of generating up to 50KV but the breakdown voltage of the coil
limits the voltage to a value somewhat lower. T2 is the ignition coil of a car and
also the 0.5µF capacitor comes from the same place: actually I suggest using only this
type of capacitor....(schematic / circuit added 05/05) |
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High Voltage Generator for Low Current Applications - Scroll down to find this
circuit. Here is a simple circuit for generating over 100 volts from a 12 volt
source for powering low current devices and experiments. The two transistors may be
2N4401 and 2N4403 or similar for lower power applications or higher....(electronic
circuit added 7/03) |
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High Voltage High Current Power Supply (Aaron Cake) - lots of power form microwave
oven transformer (added 04/03/02) |
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High voltage high frequency Amplifier drives piezoelectric PVDF transducer -
07/24/08 EDN-Design Ideas: Finding wide use in nondestructive testing, a high-voltage,
high-frequency amplifier drives a piezoelectric PVDF transducer.....(design idea added
09/08) |
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High Voltage Low Current Supply - A high voltage power supply is a very useful
source which can be effectively used in many applications like biasing of
gas-discharge tubes and radiation detectors etc. Such a power supply could also be
used for protection of property by electric charging of fences. Here the current
requirement is of the order of a few microamps.... (added 10/05) |
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High Voltage Power Supply using a Highly Integrated DC/DC Converter TPS61040
Slva137.Htm, 0 Kb - TI Application Note (added 6/06) |
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High Voltage Regulator is 100% surface mountable - 11/24/99 EDN-Design Ideas: It
can be difficult to generatea high-voltage supply from a medium-voltage input,
especially if you need a surface-mount design. It is difficult to find surface-mount
components with the necessary specs, especially the transformer and power switches.
High-voltage surface-mount capacitors can also be hard to locate. The
circuit.....(design idea added 2/06) |
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High Voltage Ring Generator - Supertex Semiconductors (app note added 6/06) |
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High-Voltage Capacitors, build your own! - (Tony van Roon's electronic design /
schematic added 2/06) |
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High-Voltage DC Generator - (Tony van Roon's electronic design / schematic added
2/06) |
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How Van De GrAAff Generators work - Most of us have seen the device, known as a
Van de Graaff generator that makes your hair stand on end. The device looks like a big
aluminum ball mounted on a pedestal. Have you ever wondered what this device is, how
it works, why it was invented, or how you might build1-yourself? (added 4/02) |
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HV generator using a TV Flyback transformer - This HV generator is able to
generate a pulsed high voltage which is high enough to draw sparks of more than one
cm! All you need is a TV flyback transformer, two 0.47uF/250V capacitors a diac, a
600V..(project added 04/05/06) |
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HV supply: 12V DC in 12KV out - ASCII format (electronic circuit added 4/05) |
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HV440 High Voltage Ring Generator - Supertex Semiconductors (app note added
2/06) |
