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2-CH RF Remote Control - On these pages, I will introduce Remote
Controller with Radio Frequency. The electric wave sending-out is controlled
with the code by PIC for transmission and the code is deciphered by PIC for
receiving. ….(electronic schematic added 11/08) |
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2-Phase DC/DC Controller Makes Fast Efficient & Compact Power Supplies -
DN334 Design Notes (Linear Technology) (app note added 1/06)
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2-Phase DC/DC Controller Reduces Capacitanceand Increases Battery Life in
Portable Applications - Design Solutions 9 Design Notes
(Linear Technology) (app note added 1/06) |
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2-wire Lamp Flasher - This circuit has been designed to provide that
continuous light lamps already wired into a circuit, become flashing. Simply
insert circuit between existing lamp and negative supply. Especially
suited for car or panel pilot lights, this device can drive lamps up to
10W.... (design added 11/06) |
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20mA LED Ballast - I use this
circuit for general use to power white LEDs, like a headset light I use on my
desk and a keyboard light for my computer. I built it into a tiny Radio Shack
project box (270-288), which they no longer sell. I put heat-shrink tubing
around the female output connector (RS P/N 273-1743), so that the contacts are
not exposed, but you can still plug and unplug it.....[Designed by Andrew R.
Morris (added 9/05)] |
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230 Volt AC Motor Controller - Controls speed of230-Volt AC
universal motor, in PDF format, text in Finnish… |
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24V/48V Hot Swap™ Controller - DN226 Design Notes (Linear
Technology) (app note added 1/06) |
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25 Light Sequencer using Xmas Lamps - This circuit above can drive
25 small Xmas lights. The lights operate at about 200mA and 3 volts. The
supply voltage is set to 5 volts and the 4017 counter output will drop about a
volt using the 2N3053 transistors. The voltage on the emitters of the rows
transistors will be about 0.7 volts less than the base so the lamp voltage
will be about 3 volts. You can.... [Bill Bowden] |
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250-Amp Speed Controller for RC Cars - Radio Controlled cars have
increased in popularity from the time when they were first introduced.
Initially, they were little more than toys. Now they have matured to an
international sport…. [by Ken Stone] |
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3 Channel IR Remote Control - This project is a 3-channel IR remote
control with 3 output relay and easy to build. Features: CPU PIC12F629 at 4MHz
crystal for Tx/Rx, 3 channel output relay, The Tx use sleep mode for saving
battery power, Use Phillips RC5 protocol, distance more than 7 m, Easy circuit
to build and assembly and small amount of components. Uses RC5 protocol which
is probably the most used by hobbyists, probably because the wide availability
of cheap remote controls and easy to understand. ….(electronic schematic added
11/08) |
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3 Channel RF AVR Remote Control - How many times you needed some
remote control to handle some electric device ? many times. There are lot of
remote controls like infrared, RF, SMS (like my other circuit) and more. The
basic small-range remote controls are 2, Infrared and RF (Radio Frequency).
One of the weaks of Infrared is that the signal can not pass the walls. So, if
you want to control your garage door, the only way is to use some RF remote
control. The circuit (transmitter and receiver) use few components and
ordinary (I love few component circuits) . Its easy to build it because you
don't have to tune-up any coil or variable capacitor. The RF modules are fix
to work in 418MHz area. ….(electronic schematic added 11/08) |
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3 Channel RF Remote Control - This is a 3 channel RF remote control
project.The transmitter powered by 3V battery(coin size) range about 10 m.
This remote control I use PIC12F509 from Microchip which is a 8-pin
single-chip microcontroller designed for low pin count applications with 1 K
words flash memory and 41Byte SRAM and some special features such Power-saving
Sleep mode,Wake-up from Sleep on pin change. ….(electronic schematic added
11/08) |
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300 MHz AM RF Remote Control System - (schematic / Circuit design
added 9/02) |
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324 OpAmp Stall-Motor Switch Machine Drivers - The circuits on this
page are switch machine drivers that can be used to operate Stall-Motor type
switch machine motors. The circuits use LM324 Quad or 358 Dual operational…
[from Rob Paisley's Model Train web site] |
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35kHz Magnetic-Radiation Remote-Control - (electronic circuit added
4/05) |
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3Amp - DCC Booster Circuit #1 (LMD 18200) - The first schematic is
for a basic 3 Amp - DCC Booster using the LMD 18200 CMOS, H-Bridge.
Included in the design is a 5Volt regulator that supplies power to the DCC
signal generation and display circuitry…. This page features H-Bridge
circuits used for controlling direct current motors - scroll to find this
one…. [from Rob Paisley's Model Train web site] |
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3-Axis Stepper Controller - (schematic added 02/09) [Site is under
construction right now] |
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3-Ph BLDC Drive Control with Hall Sensors - This reference design
describes a 3-phase 4-quadrant sensor BLDC motor drive, which can run in both
a speed open loop and a speed closed loop. application is designed for
MC68HC908MRxx family dedicated to motor control applications.... (app
note added 6/06) |
