Audio Related
Advent
Speaker Repair
Large Advent speaker (circa 1979), foam surround, crossover
capacitor and resistor replacement information and pictures,
crossover schematic diagrams, and Advent sales brochure and user
manual.
Click
and Pop Filter Symmetric Sound Systems PS-1
Symmetric Sound Systems PS-1 audio pulse swallower kit, This Kit
was featured in Radio Electronics magazine in the 1980s.
RIAA
Stereo Phono Preamp
Home built stereo riaa phono preamp used to interface a record
player's magnetic cartridge output to the line level input of
computer sound cards, and other modern audio devices without phono
inputs.
Surfman
Surfman, homebuilt electronics project designed to create the
sound of rain, crashing surf, or unmodulated pink noise, Designed
by John Simonton and featured in the August 1992 issue of Radio
Electronics and Electronics Now combined magazine.
Electronics Test & Project Creation
Audio
Frequency Signal Generator
This audio frequency generator project was featured in the March
1984 issue of Radio Electronics magazine and is based on the
XR-2206 function generator ic.
Automatic
Coil Winder
My build of the computer controlled automatic coil winder project
that was featured in the June 2005 issue of Nuts and Volts
magazine.
Automatic
Coil Winder - PIC Microcontroller Based Control Unit
My first addition to the Automatic Coil Winder eliminating the
need for a computer with parallel port to run the winder.
Automatic
Coil Winder - PIC18F4550 Based Control Unit
This is the 2nd version of my PIC based Automatic Coil Winder
Control Unit. It is based on the PIC18F4550 microcontroller and I
paired it up with two LiniStepper driver boards.
Automatic
Coil Winder - Arduino Based Control Unit
Page Under Construction
- Arduino based automatic coil winder made with 3d printed parts.
Cyclone
PCB Factory version 2.1
Page Under Construction
- Printed circuit board milling machine made from 3d printed
parts.
PIC
Microchip Modules
A collection of home-built PIC chip breadboard modules, getting
started programming a PIC chip with a JDM based hardware
programmer, and a sound command input value to musical note table
I created.
Test
Bench Power Supply
My recently updated homebuilt work bench power supply.
Energy Related / Solar
Solar Book
with two Chronar panels
Homebuilt Solar Book using two surplus 6" X 12" Chronar thin film
solar panels.
Solar
Briefcase with six Chronar panels
Six Chronar 6" x 12" solar panel built into a wood case.
All panels electrically switchable into various series and
parallel configurations.
Solar
Panel - Chronar
Chronar 6" x 12" solar panel and characterization data.
Solar
Panel Testing Shunt
Solar Panel Testing Shunt for measuring the power output of small
solar panels.
Solar
Shunt Regulator 100 Watt
Page Under Construction
-100 watt solar shunt regulator for 12 volt solar.
Switching
Regulator LM2575T-ADJ
LM2575 step down switching regulator circuit and efficiency data
table.
Miscellaneous Electronics Projects
Aquarium
Timer
Schematic, pictures and information for my 15 minute aquarium
filter and air pump shutoff timer for fish feeding.
88
Dakota ECM Repair
1988 Dodge Dakota ECM (Computer) Repair, ECM ignition coil drive
transistor and suppression capacitor replacement.
GPS USB
Mini Jack - Hack / Repair
Replacing or bypassing a broken GPS Mini USB Jack / Power
Connector.
Maytag
Neptune 5500 Washer Repair
Repair information and photos of damaged control board
components,and schematic drawing of the motor control board C
phase drive circuit.
Phone
to Sound Card Interface for Skype
Homebuilt phone to computer sound card interface for Skype.
Solid
State Triac Relay
A triac solid state relay I built to replaced a failed mechanical
relay used to power an inline HVAC duct booster.
Musical Instrument Related
Bass
/ Guitar Headphone Amp
This is my Bass / Guitar Headphone Amp build of Craig Anderton's
Guitar Headphone Amp from his Electronics Projects for Musicians
book.
Electric
Bass / Guitar Headphone Amp with Stereo Auxiliary Input
I designed a DIY musical instrument headphone amp with a stereo
auxiliary input to mix the audio of a MP3 player, laptop computer,
radio, or other device with an electric bass or guitar.
McTube
II Preamp
My build of Fred Nachbaur's Real McTube II musical instrument
overdrive / distortion preamplifier.
Music
Effects Boards
Bass Fuzz, Compressor / Limiter and the Phase Shifter projects
from the Craig Anderton's "Electronics Projects for Musicians"
book.
Practice
Play Along
The Practice Play Along mixes a musical instrument with your
stereo system. This is a Craig Anderton design from his
Electronics Projects for Musicians book.
Other Electronics Stuff
Electronics
Related Websites
Information, parts suppliers, etc.
LR-505
Transistor Specifications
Vintage Lafayette LR-505 ( 505 ) germanium transistor and
specifications.
Minebea
Stepper Motors
Part number decoding & stepper motor specifications, Circa
1999
Minebea
Stepper Motor Winding Wiring Diagrams
Diagrams with winding wiring color codes, Circa 1999
Photo
Cell Cadmium Sulphide 276-116 Data Sheet
Data sheet includes photocell specifications, graphs of the
photoelectric characteristics, and circuit ideas.
Radio
Shack Transistor Application & Substitution Information
From the 1974 Radio Shack catalog.
Radio
Shack Transistor Specifications
From the 1976 Radio Shack catalog.
SCR
276-1020 Data Sheet
Includes specifications, silicon controlled rectifier theory,
typical voltage - current characteristics graph, and circuit
ideas.