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128x64 LCD assembly Driver for AT90S2314 - Here you will
find a source code to drive a graphics LCD display 128x64
pixels with AT90S2313.The connections between LCD and AVR,
you will find them to the source code. |
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16x16 LED Matrix & Driver |
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20 dB Amplifier & High Current Balanced Line Driver - AS023
Jenson Transformer Application Note |
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300v Peak To Peak Signal Generator - This circuit converts
a square wave signal to a +-150 volt output signal with fast
100nS rise and fall times..... [Designed by David A. Johnson] |
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30hz to 90hz Adj P.A. Driver |
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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. This reference design
includes a description of Motorola 68HC908MR32 features, basic
motor ory, system design concept, hardware implementation |
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3x3x3 LED Cube - This circuit drives a 3x3x3 cube
consisting of 27 white LEDs. The 4020 IC is a 14 stage binary
counter and we have used 9 outputs. Each output drives 3 white
LEDs in series and we have omitted a dropper resistor as the
chip can only deliver a maximum of 15mA per output. The 4020
produces 512 different patterns before the sequence repeats and
you have to build the project to see the effects it produces on
the 3D cube. |
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4 Channel Timer using Atmel 89C4051 & MAX7219 display Driver
- using Atmel 89C4051 and MAX7219 display Driver |
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50 Ohm Long Line Driver - AS029 Jenson Transformer
Application Note (app note 6/07) |
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50 Ohm Long Line Receiver & Driver - AS028 Jenson
Transformer Application Note (app note 6/07) |
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555 timer drives multiple LEDs from one NiMH cell -
2-Oct-08 Issue of EDN Using a CMOS 555 timer, you can drive
seven high-brightness LEDs from a single 1.25V cell..... [Design
Idea by Chuck Irwin, Hendersonville, NC] |
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555 timer eliminates LED driver’s need for microprocessor
control - 3-Sep-09 Issue of EDN A timer provides
programming pulses for lower cost than a microprocessor.....
[Design Idea by Michael Day, Texas Instruments, Dallas, TX] |
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555 Timer-Based Flyback Transformer Driver - My 24kV high
voltage "Jacob's Ladder" from DIY flyback transformer driver
using 555 timer. |
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556 Switch Machine Driver - The circuits on this page are
switch machine drivers that can be used to operate Stall-Motor
type switch machine motors. The circuits use LM556 dual timer
chips to provide a PUSH-PULL output to reverse the polarity of
the supply to the switch machine motors. [from Rob Paisley's
Model Train web site] |
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556 Timer 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
LM556 dual timer chips to provide a PUSH-PULL output to reverse
the polarity of the supply to the switch machine motors. [from
Rob Paisley's Model Train web site] |
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5x5x5 LED cube - This month's featured Gadget Freak is
provided by an old favourite of the blog, Peter Griffiths. He
shares all the details necessary to build your own 5 x 5 LED
cube… |
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6 Aspect-Searchlight Signal Driver (LM555) - The circuit on
this page is a 6 Aspect driver for a bicolour LED type
Searchlight Signal. The available signal indications are; SOLID
RED, YELLOW, GREEN, and FLASHING RED, YELLOW and GREEN. The
circuit can also turn the signal OFF for approach lighting if
desired. [from Rob Paisley's Model Train web site] |
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74*245-based Motor driver - A simple, time-honored approach
is to use one or more 74*245 chips (normally 74AC245 is used
for maximum current capability) to provide motor drive current.
Here, each channel of drive power is provided by one or more
buffer on chip. |
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“Chipiplexing” efficiently drives multiple LEDs using few
microcontroller ports - 27-Nov-08 Issue of EDN "Chipiplexing"
approach simultaneously drives two LEDs..... [Design Idea by
Guillermo Jaquenod, La Plata, Argentina] |
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1.5V battery powers white LED driver - 30-Sep-04 Issue of
EDN Although white LEDs are common in a variety of lighting
applications, their 3 to 4V forward-voltage drop makes....
[Design Idea by Steve Caldwell, Maxim Integrated Products,
Chandler, AZ] |
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12 DB Amplifier & High Current Line Driver with DC Servo -
AS024 Jenson Transformer Application Note (app note 11/02)
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12 Volt DC Fluorescent Lamp Driver (Aaron Cake) - This
fluorescent lamp driver uses a normal 120 to 6V step-down
transformer in reverse to step12V to about350-Volt to drive a
lamp without need to warm filaments. |
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12 Volt fluorescent lamp drivers - Three schematics of 12 V
drivers for 2, 8 and 20 Watt, plus a lot of explanations about
fluorescent tubes. Use the drivers for camping, emergency,
boating, etc. [Manfred Mornhinweg] |
