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HeadBanger Headphone Amp Construction Kit - (circuit design added 06/06) |
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HF AC Millivoltmeter adapter - (schematic / circuit added 6/07) |
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HF/VHF/UHF Test Oscillator - (circuit added 6/07) |
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HiFi Preamp - The PGA2310 is a pretty neat chip. It's capable of attenuating a
stereo source over a 127dB range (-95.5dB to +31.5dB) with 0.5dB steps. It has a
maximum gain error of +/-0.05dB, and THD of 0.0004% at 1KHzS...(circuit added
04/05/06) |
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High-Voltage Capacitors, build your own! - (Tony van Roon's electronic project
added 2/06) |
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Home Brew Compass Sensor - (electronic circuit added 4/05) |
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Home Built Laser Projector - Laser projector is one of the laser display
equipments. This project builds the closed-loop galvos mainly and aiming at
professional grade. (electronic construction project added 10/05) |
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Home Built Nitrogen Laser - (electronic diagram added 6/03) |
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Home Made PBX/PABX - (design added 8/03) |
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Home Security Project - (electronic diagram added 6/03) |
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Homebrew Basic Stamp Project - (electronic circuit added 4/05) |
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Homebuilt Rs232 LCD Interface - This controller board takes anything between
+5Volt to +30 Volt power , (have it's own regulator) ….(electronic circuit added 4/05) |
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Homebuilt Video Digitizer Mark I - (electronic circuit added 4/05) |
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Homebuilt Video Digitizer Mark Ii - (circuit / schematic design added 6/06) |
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Homemade Binaural Mics - (circuit design added 06/06) |
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Homemade Easter Egg Anemometer - In any wind generator installation, it's critical
to be able to measure wind speed. That gives you a baseline against which to measure
your machine's performance, and anemometers respond much more quickly to changes in
windspeed than do wind generators. Commercial anemometers are....(electronic project
added 2/06) |
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Homemade Printed Circuit Board - Making a custom printed circuit board (PCB) takes
some setup time and supplies, but is well worth the repeatable, reliable results. The
example board is single-sided copper with through-hole components. Two-sided and
surface-mount circuit boards follow. (project added 10/06) |
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Homemade USB ,HID compatible, input device - The PIC16c745 is an OTP (one time
programmable) device. You can program one yourself, but you need an programmer that
can do it, and do it right on first try.
This is why I offer to sell preprogrammed 16c745 and the SMD resonator, because these
are the parts people may have trouble finding.
(project added 08/08/08) |
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Hot Wire Foam Cutter #3 - Here is a homebuilt foam turning lathe!! This is made
from a window motor adapted and appropriately painted for the application. The pillow
blocks that the rotating shaft bear in were made from foam patterns and cast using the
above mentioned techniques. The two dials on the electrical box are light dimmers with
simple numerical... (electronic project added 2/06) |
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Hot Wire Foam Cutter #6 - Hot wire foam cutters are used by hobbyists of all
stripes to contour Styrofoam into a vast array of shapes for a wide variety of uses.
Model railroad builders shape foam into landscapes. RC plane builders shape foam into
aircraft wings and fuselages. Stagehands shape foam for theatrical sets and ....
(electronic project added 2/06) |
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How to Build a 300MHz AM RF Remote Control System - (circuit / schematic design
added 6/06) |
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How to build Amplifier 2x30W with STK465 - A amplifier of acoustic frequencies can
be manufactured with discernible materials, despite is known so much the difficulties
of finding of materials, what the problem of regulations. These difficulties are
overcome relatively easily if we find amplifier in form completed.....(circuit added
08/08) |
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How to build Deluxe Charge Rate Limiter for Small Capacity NiCad Batteries - Here
is a deluxe version of the simple charge rate limiter, using the same idea but with
the ability to charge two packs simultaneously from a single wall charger. For circuit
description and parts list, see ….(design added 08/08) |
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How to Connect Two or More Signal Generators to Create a Multi-Channel Waveform
Generator - Agilent Application Note (added 4/10 |
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How to construct Garmin GPS receiver interface cables - (electronic circuit added
1/07) |
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How To Control Multiple Leds - Multiplexing the I/O ports, you can control many
leds using a few ports. (circuit added 5/06) |
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How to De-Bug & Design DDR Memory Modules - Pericom Semiconductor App Note # 068
(app note added 02/05) |
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How to Find Boundary Condition Problems in Your PCI Bus Interface - Agilent
Application Note (app note added 6/06) |
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How to Generate Low Duty Cycle Pulses with a Function Generator - Agilent
Application Note (added 6/06) |
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How to generate random numbers - Start with an about 10MHz crystal oscilator, and
a 1000Hz rc oscilator such as a 555 or a few cmos gates. Uses high temperature
coefficient capacitors like Z5U's and even thermisters if you are so inclined for the
1000 Hz oscilator. Run the 10 MHz to a flip flop set up to toggle..... (circuit
design added 10/06) |
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How to Get Power from PC to Your Circuits - (design circuit added 8/02) |
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How to Implement ICSP using PIC12c5xx Otp Mcus - Microchip Application Note
Published 20-Oct-04 (app note added 2/06) |
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How to Implement ICSP using PIC16cxxx Otp Mcus - Microchip Application Note
Published 14-Feb-00 (app note added 2/06) |
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How to Implement ICSP using PIC16F8x Flash Mcus - Microchip Application Note
Published 15-Feb-00 (app note added 2/06) |
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How to Implement ICSP using PIC17cxxx Otp Mcus - Microchip Application Note
Published 20-Oct-04 (app note added 2/06) |
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How to Interpret DS1847/DS1848 Temperature Readings - App Note 216: Maxim IC
(application note added 4/08) |
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How to Interpret DS1852 Temperature & Voltage Readings - Maxim Application Notes /
1194 / Oct-06 (app note added 5/08) |
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How to make a Jacob's Ladder - You will need 12K-15K volts AC (50/60) Hz at say
20-30 mA. A neon sign (luminous tube) transformer is the usual source though an oil
burner ignition transformer will work in a pinch (some say better and cheaper) or you
could build an inverter type power supply.... (circuit design added 11/06) |
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How to Make a RJ45 Cable Tester - Plug and Socket Wiring Details T568A Standard….
(electronic circuit added 09/06) |
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How to Make a Roomba Serial Interface - (electronic circuit added 2/07) |
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How To Make a Speaker - A homemade speaker using a plastic cup, business card,
wire, magnet and some Lego blocks. I built this speaker from scratch; I was surprised
of the quality of the sound. Updated! (6/14/2007) |
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How to Make Chase Lights - This example shows3 track chase lights built
from3-Christmas light sets and1-light chaser controller (added 4/05) |
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How To Measure the Switching Voltage & Hysteresis Of A Cmos Gate - Manufacturing
tolerances mean that the switching characteristics of Cmos ICs vary from one batch to
the next. This page provides two small circuits that will allow you to measure the
exact switching voltage of common Cmos inverters and non-inverters. |
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How to Modify the PICDEM LIN for the MCP201 - Microchip Application Note Published
23-May-03 (app note added 2/06) |
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How to Program the Bias DAC in Manual Mode for the DS1863/DS1865 PON Controllers
- Maxim App Note 4196 -- 3/17/2008 -- (app note add 5/08) |
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How to record telephone conversations - Sometimes it is useful to record telephone
conversations. The easiest way is to go to a shop and buy a telephone conversation
recording adapter which is connected between telephone line and the tape recorder.
Those recording adapters are usually connected between telephone line and the
telephone, but there are also other type available....(electronic circuit added 10/05) |
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How to Reliably Protect CMOS Circuits Against Power Supply OverVoltaging - AN-311
Analog Devices Application Notes (app note added 2/06) |
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How To Remagnetize Old Headphones - The magnets in old-style high impedance
headphones can gradually lose their potency resulting in diminished output volume. The
authors describe two methods for restoring de-magnetized headphones. Designed by
Tom Provost and Gary D'Amico (circuit design added 04/05/06) |
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How to Select a Transient Voltage Suppressor - MicroNote 125 from Microsem
(app note added 6/06) |
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How to select the proper mixer - Application Note MiniCircuits.com (app note
added 04/05/06) |
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How to use the Agilent N67xxA Modular Power System to replace an Agilent 662xA -
Agilent Application Note (added 6/06) |
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How to Use the MAXQ2000 as a Voltmeter - Maxim App Note 4194 -- 3/24/2008 --
(app note add 5/08) |
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How to Use the World's Smallest 24-Bit No Latency Delta-Sigmatm ADC to Its Fullest
Potential - AN80 Linear Technology Linear Technology's LTC2400 is the world's
first 24-bit ADC in an SO-8 package. An innovative new delta-sigma architecture has
been developed. The result is a small, highly accurate, simple-to-use delta-sigma ADC.
This Application Note was created to educate users ....(added 1/06 |
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How to Validate BLVDS SER/DES Signal Integrity using an Eye Mask - National
Semiconductor Application Note (app note 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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How VCO Parameters Affect Each Other - AN-95-005 Application Note
MiniCircuits.com (app note added 04/05/06) |
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How-to build a webserver for 30Euros with ENC28J60 - The ENC28J60 is a single chip
10mb Ethernet controller easy to drive by a microcontroller with SPI bus. (project
added 10/06) |
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How-to build an USB device with 18F4550 or 18F2550 - (project added 10/06) |
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HP-310 Wave Analyzer - A summary of my HP-310, which I use as a VLF receiver
(electronic Construction Project added 09/06) |
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