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Making Printed Circuit Boards at or Near Home: a Comprehensive Overview, Almost a Guide
DIY Amp / Watt Hour Volt Meter - Arduino
Complete Guide for Tech Beginners
Powering Your Project
DIY MOSFET Motor Controller
Salvaging Liquid Crystal Displays (LCDs)
DIY 2G/3G/4G Wireless Cell Phone Signal Booster
Recycle Old PCB Components
How to Recover Components From Old or Broken Electronics Without a Soldering Iron!
DYI Car PC
Building a Carputer
ElectroLuminescent Bumper Sticker
Adding a Computer to Your Car (CarPuter)
Build a Multimedia System Using Raspberry Pi2
Bluetooth Streaming for Raspberry Pi Multiroom Audio
Remote Control Your Raspberry Pi
Raspberry Pi With Android Display
Raspberry PI Auto-boot
Arduino Vs Raspberry Pi Which Is Better for You?
Raspberry Pi NOAA Weather Satellite Receiver
PiScope (Raspberry Pi Based Oscilloscope)
Turn Raspberry Pi ON W/ Remote Control
Raspberry Pi Temperature Sensor
Getting to Know Raspberry Pi
Building a Pi Supply Power Switch for Your Raspberry Pi
Raspberry Pi Weather Station
Use Your Tablet As Raspberry Pi Screen
How to Connect Raspberry Pi to Mobile Screen
Current Monitoring With Raspberry Pi
Ultimate Raspberry Pi Configuration Guide
Ham / CB Radio Mount
EcoLink - the Echolink Compatible USB Interface
Raspberry Pi for Amateur Radio VOIP (Echolink) Part 1,2 and 3
Raspberry Pi Touch Screen Car Computer
Temperature Controlled Fan
Car Battery Mig Welder
On-Board Air Compressor / Welder for Vehicles
Li-ion Battery Charging
Li-ion Battery Charger
I didn't notice a mention of it, but almost all alternator cooling fans are directional. If you spin the alternator the "wrong" direction, it will still produce power, but the fan won't be pulling air across the rectifier diodes and eventually they will overheat and fail. Also, automotive V belts and pulleys are not the same as standard off the shelf v belts/pulleys.With just slightly more work and wiring, this unit could also function as a DC welder. You'd need to wire in a switch to bypass the voltage regulation in the alternator, and a potentiometer to vary the voltage/current to the brushes to regulate the output. It's much easier to accomplish this with an externally regulated alternator.
Off Grid LPG (propane) Powered Battery Charger
Create a DC Power Supply
Power Supplies Tutorial
DIY Lab Bench Variable Power Supply
BreadBooster: Breadboard Power Supply Reinvented
Triple Variable Regulated Power Supply
Camping Power Supply
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Variable Portable Power Supply
Make the Simplest Adjustable Power Supply in 10-15 Minutes!
Regulated Power Supply
(Adjustable) Power Supply 650 Watts 54 Amps for Under $50
Powered Breadboard Workstation
Design and Implementation of a 10Amp Linear Power Supply
Switched Mode Dual Variable Power Supply
Super Recycled Benchtop Power Supply
Make Your Own Custom Powerbank Gift!
Portable Adjustable Mini Powersupply
Ultra Small Portable Power Supply
Portable Power Supply
DIY Bench Power Supply for Hobbyists
How to Get Emergency Power From a Phone Line
Mini Adjustable Power Supply
DIY Small Bench Power Supply
DIY Variable Bench Power Supply
5A Variable Linear Power Supply
Short Circuit Protection for (almost) Any Power Supply
THE EXTREMELY SIMPLE DIGITAL DC-DC POWER SUPPLY!
Variable Voltage Regulator - Filtered Linear Power Supply
The conductor between the antenna and the transmitter/receiver only matters in that it should be properly sized for the length required(antenna to transmitter/receiver) at the frequency which will be used.In the sixty seconds I spent looking up "fractal antenna", I didn't find any made from wire.
I am not sure on exact temperature, it likely varies somewhat based on the alloy. I have seen it with several different alloys, all of which had different temp requirements to harden.....and different quench requirements as well.
It is indeed possible to remove carbon from steel, though not via the quench liquid. If you overheat the steel, you will "cook" the carbon out of it. I have seen this happen more than once with tool steels and heat treat ovens.