Archive for June, 2010

The dimmer switch circuit which uses small, low voltage control is useful in load or electrical appliances such as small dc motor, LED, a small coil circuit as below. Another idea would be interesting.

More circuit about DC dimmer

12 Volt Lamp Dimmer Here is a 12 volt / 2 amp lamp dimmer that can be used to dim a standard 25 watt automobile brake or backup bulb by controlling the duty cycle of a astable 555 timer oscillator. When the wiper of the potentiometer is at the uppermost position,….

PWM Motor Speed Controller – DC Light Dimmer by IC LM324 A pulse width modulator (PWM) is a device that may be used as an efficient light dimmer or DC motor speed controller. The circuit described here is for a general purpose device that can control DC devices which draw up to a few amps of current…..

Spot lamp dimmer by LM555 and TIP2955 This circuit is DC Dimmer Circuit. By use IC LM555 be model Astable Multi vibrator. It is can change translate Duty Cycle with fining VR1 and VR2 be formed fine brightness level that want…

Lithium-ion battery Rechargeable batteries are commonly used in power electronic devices such as notebooks today, iPod, digital cameras and many other types. Information on the web, Apple has said the standard Lithium-ion battery and shows the physical properties of its standards. The reference to Li-ion batteries in other electronic devices as well.
Lithium-ion battery and charger soon almost all the energy to charge the battery up to 80% of capacity was observed from image When charged to 80% then switch to a trickle charger or charge calmly. Fast charging time measured from the power tubes out to the 80% approximately two hours, then charge to approximately 2 hours until full capacity.
Next, we look integrated with each li-ion battery.

1. li ion battery charger
2. li-on battery charger
3. Lipo Battery Charger
4. lithium battery
5. Lithium Polymer battery

USB Li-ion battery charger
This is a charger for lithium ion batteries which takes its power from the USB port of a computer. It uses the MCP73861 or MCP73863 Li-ion …

Li-ion Battery Charger for Mobile phone by TL431
This is a simple to build charger for single 3.7V lipo battery. The heart of the charger is TL431 shunt regulator that controls the incoming …

Simple Lithium-ion – Lipo Battery Charger
This is a Lithium-ion charger for lipo batteries. Circuit schematic shows configuration for charging single 3.7V lipo battery but voltage …

Lithium Ion – Lithium Poly Charger by LM317
The above circuit will charge any 2-cell * Li-Ion battery pack. Maximum current is about 650 milliamps. The circuit is designed for …

2 Cell Lithium Ion Charger
2 Cell Lithium Ion Charger. This entry was posted on Saturday, April 21st, 2007 at 7:44 am and is filed under battery charger. You can follow any responses …

Dry Cell Battery Charger using LM741 and IC4011
USB-Powered Lithium-Ion Battery Charger by LM3622 · Li-ion Battery Charger for Mobile phone by TL431 · Lithium Ion – Lithium Poly Charger by …

500mA Li-Ion Charger LTC1731-4.1 circuit
500mA Li-Ion Charger LTC1731-4.1 circuit, PDF File. Easy circuit. Related Links More Circuit about Battery More Circuit about Battery …

Li-Ion Charger using LP2951
For those wondering, this is compatible with just about any single-cell li-ion battery since li-ion can generally accept a charging current …

Charger battery Lithium Variable current up to 2A by L200

This is digital logic circuit. Which use digital IC kind CMOS and TTL many the number.
It be the character gate very the circuit has appropriately. It is the measuring instrument logic
show electricity position low or high get. May show with LED or utter hear all right.
The gate IC come to use produce sound frequency or the other circuit

Digital Logic Probe by IC TTL 7414
6 Aug 2007 … This circuit is quite useful for displaying the states of digital lines.
The two 330R resistors may need to be changed as the circuit I …

Pulse Reading Logic by 74LS00 and 74LS123
6 Aug 2007 … This circuit is supplied as a hobby project. It uses indicator LEDs to …
Digital Logic Probe by IC TTL 7414 · Current source with LM317 » …

Logic Digital Tester by LM324
1 Oct 2008 … This is Logic Digital Tester Circuit. It uses the level input about 5V
and use the integrated circuit LM324. Be Main Part electronics …

Simple Logic Probe by NE556
6 Aug 2007 … The usefulness of this logic probe is limited to low frequency
digital circuits. Related Links More digital circuit …

IC 4001 NOR gate (IC digital)
10 Jul 2007 … The NOR gate is a digital logic gate that implements logical NOR
- it behaves according to the truth table to the right. …

Logic probe by IC 4050
5 Jun 2007 … When you learn digital circuit necessary tool for check logic of the digital.
May flee don’t pass Logic probe for extremely amateur type our …

Simple Pulse Generator by IC 555 Timer
24 Apr 2008 … This is a simple pulse generator circuit with IC 555 timer.
Use for digital Logic circuit. IC 555 use voltage supply 5V to 15V.

Logic Probe by 74LS47
19 Jun 2008 … This circuit is a Logic Probe. It indicates the logic state of the node of any …
2008 at 6:52 pm and is filed under Digital, circuit com. …

Monostable Flip Flop
19 Apr 2007 … In the discrete circuit, the left transistor normally conducts
while the right side is turned off. … Digital Logic Probe by IC TTL 7414 …

Standard Touch Switch by Gate of IC 4011
27 Apr 2008 … This circuit uses a 4011 logic gate digital as the bases of the touch switch.
It are Standard and very easy because I used a Gate of IC 4011 …

Squarewave Oscillator
Use for digital Logic circuit. IC 555 use voltage supply 5V to 15V. The output’s frequency is control
by R1. Detail more, Please read in this image circuit. …

Audible Logic Probe
27 Apr 2007 … When testing circuits with a logic probe, it is sometimes difficult to watch
the LEDS on … Logic probe by IC 4050 · More digital circuit …

The one short circuit, be the circuit delays one kind. It work with something trigger of logic digital signal.
It cause way change output follow while note. Which there are various circuit examples for consider,
choose use cough abundantly that is appropriate.

555 timer Mono stable (one shot) circuit
19 Apr 2007 … The two circuits below illustrate using the 555 timer to close a relay
for a predetermined amount of time by pressing a momentary N/O push …

One – Shot Timer by IC 555
This is digital circuit, It is One – Shot Timer make by IC 555. Power supply 5-15V,
Output pin 3, Input pin 2 Trigger input. One – Shot Timer by IC 555.

One-Shot By IC Quad Timer 558
23 Jul 2007 … One-Shot By IC Quad Timer LM558 When mention the circuit
One Shot friends at take an interest digital side may know good that how much is it …

Simple Touch Switch One Shot by 4011
17 Apr 2008 … Here is a simple touch control switch, I use IC 4011. Logic HI
at output is timer pulse delay control by C1 1S = C1 4.7uF(micro farad), …

Monostable Flip Flop
19 Apr 2007 … The circuit then remains in a stable state until the next input.
The one shot circuit on the right employs two logic inverters which are …

One-Shot by IC 74LS02
15 Aug 2007 … This is circuit Digital One-Shot, use IC TTL Digital 74LS02 :
QUAD 2-INPUT NOR GATE . Time Output = 0.8xRxC Related Links More digital …

Monostable Multivibrator by 4538
26 Mar 2008 … When you trigger the chip the output sends off one single pulse or one …
More circuit about one shot · One-Shot By IC Quad Timer 558 …

Stepper Motor controller by PIC16F84
9 Jan 2008 … On these pages, I will introduce a control circuit for stepper motor.
The software of this project is adapted to Embedded Systems(Lab13) for …

Stepper Motor Driver using L298 and L297
This Step motor controller uses the L297 and L298N driver combination;
it can be used as stand alone or controlled by microcontroller.

Basic Stepper Motor Driver by 74194
19 Mar 2008 … The following diagram is for the main circuit of the motor driver.
A testing version is shown later on this page.

Stepper Motor Driver by 74194
2 Feb 2008 … Probably the simplest, reversible drive circuit is the H-Bridge.
Some BEAMbots use H-bridge motor drivers; many more use an H-bridge variant …

74LS194, 74LS04 drive a stepper motor
19 Sep 2007 … There are so many ways to drive a stepper motor, Here is another circuit that use
74LS194 4 bit bi-directional universal shift register as a …

4013 and IRF510 Easy drive a stepper motor
19 Sep 2007 … Here is easy circuit drive a stepper motor with pulse input.
Use IC 4013 (IC Cmos) and Mosfet IRF510 drive Motor Stepper.

Driving Bipolar Stepper Motors by PIC16F84
4 Feb 2008 … Stepper motors are devices, which convert electrical impulses into discrete
mechanical rotational movements. In a typical stepper motor, …

Stepper Motor Driver by SN74194
9 Nov 2007 … This page features an inexpensive stepper motor driver that could be used
to power slow speed projects on the layout or other hobby …

Simple Stepper Motor Controller by 4027 , 4070
5 Oct 2007 … Click to View Circuit and Read More I found this circuit in my files.
I don’t know where it came from, but it looks like I photocopied it …

ULN2003 Control Stepper Motor by Parallel Port
15 May 2008 … This is an easy to build stepper motor driver that will allow you to precisely
control a unipolar stepper motor through your computer’s …

Stepper Motor Driver Kit
28 Jul 2009 … The motors are top quality, but how the heck do you drive them without
shelling out a fortune? Lightweight, with Ramsey Super Stepper!