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Archive for March, 2011

Photo cell control

March 17, 2011 by

Solar garden lamp by CDS photocell control
Reverse engineered circuit diagram of yet another commercially produced solar garden lamp. This one depends upon a CDS photocell to turn the …

Photo Cell Control
This one uses a photocell for detecting the light intensity. At full light the resistance of the photocell will be few ten ohms and at …

CDS Photocell Control
Solar garden lamp by CDS photocell control. Tuesday, July 1st, 2008. Reverse engineered circuit diagram of yet another commercially produced solar garden …

Photocell based night light by ua741

Dark Activated Switch by IC 741
The 1M control should provide a wide range for light intensities, … When light falls, the resistance of the photocell increases and the …

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AA battery charger

March 13, 2011 by

USB port AA NiMH and NiCd Battery Charger by IC 393
I Find circuit Chartger battery AA NiMH for USB port. I see to Good WEB : http://www.stefanv.com/electronics/ Detail : In a recent blog …

AUTOMATIC AA NICAD Battery Charger with 4541
… Charges AA cells on a 5-hour or 14-hour rate with automatic turn off Rechargeable batteries are very popular for use in all sorts of devices …

USB Powered AA NiMH – NiCd Battery Charger by LM393

Solar garden LED light and single NiCd AA charger
Solar garden LED light and single NiCd AA charger. This entry was posted on Sunday, June 29th, 2008 at 10:20 pm and is filed under battery charger, …

Automatic Nicad Battery Charger
AUTOMATIC AA NICAD Battery Charger with 4541. Sunday, July 29th, 2007. Charges AA cells on a 5-hour or 14-hour rate with automatic turn off …

Dry Cell Battery Charger
That can use charger battery get that about 12 hour. … power supply 9 volt the equipment that fix in the circuit use for size battery AA. …

NiMh Battery Charger
USB Powered AA NiMH – NiCd Battery Charger by LM393. Sunday, March 30th, 2008. The charger in this project is designed to charge two AA NiMH …

Solar Cell charges a NiCd AA cell when darkness falls
More Circuit about Solar cell Battery Charger · More Circuit about Solar Outdoor Lights · Solar garden LED light and single NiCd AA charger …

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Light meter

March 11, 2011 by

Light Meter
This is circuit Simple Light Meter, I use Poto Resisitor for sensitivity light. And display ligh value by M1 or mini meter 1mA. …

Simple Light Meter by Photo Resistor
This is circuit Simple Light Meter, I use Poto Resisitor for sensitivity light. And display ligh value by M1 or mini meter 1mA.

Temperature – Light Brightness Meter with LCD
Circuit measures the temperature and ambient brightness of the surrounding environment at the location it is placed.

Simulate the traffic light circuit
This circuit works well. But there are disadvantages. The yellow light will be lit at all times. « Micro ampere meter circuit using uA741 …

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RSS Electronic projects circuits

  • The super pre tone control project can build by yourself. June 18, 2013
    I always recommend relatively many circuits or project on the pre tone control. Today we see other interesting project. (Please do not get bored them). we can divide normally type of the tone control are 2 types as following 1. Passsive Tone Control 2. Active Tone Control A stype of the passive tone control circuit […]
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  • Touch sensitive to the melody alarm using UM66t June 16, 2013
    This is a fun, interesting. It can create the music enjoy listen to touch of a button to control metal. When our hands touch point. the Circuit will produces a musical sound by UM66T-IC1 out to peizo speaker immediately. This circuit use very little amount. Suitable for beginners. or Parents and children together to build […]
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  • Digital temperature meter using LM335 or LM135 June 15, 2013
    If you need to use a temperature meter that has High the accuracy temperature measurement. In the Measurements temperature by diode 1N4148 and Dfferential Temperature Relay Switch by IC 741 we use diode is sensor which saving but average quality. This projects we use the LM335 and LM135 both are sensor IC designed specifically for […]
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  • Digital capacitor meter projects easy to build June 15, 2013
    Today, I recommend the digital capacitor meter projects. It can measure capacitors ranging from 1pF to 2,000 uF. Which covers almost all of the capacity. And cheaper, it’s much more effective than Simple capacitance measurement. And continue to develop this project(digital voltmeter). Usually, we use the digital multimeter cheap. Can measure only the capacit […]
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  • Acoustic-guitar-pickup circuit using TL071 June 13, 2013
    If you are looking for a acoustic guitar pickup that cheap and you can build with yourself. Suitable for the show enjoy of the party at home or in a group of friends. This project is a good answer. For people like to play surely acoustic guitar with no pickup in it. Known piezo speaker. […]
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