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FOR HP OMEN 25L 30L Laptop Motherboard L96320-001 L76700-001 LGA1200 Z490 *lm For Sale

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FOR HP OMEN 25L 30L Laptop Motherboard L96320-001 L76700-001 LGA1200 Z490 *lm:
$252.82

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printhead fit for hp officejet pro 8100 8600 plus 8610 8620 8625 8630 8600plus

$59.49

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New HP 89X (CF289X) Black High Yield Toner Cartridge For HP LaserJet

$193.00

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For HP CF258A 58A Black Micr Toner Cartridge

$278.29

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Popular Tutorials

Alarms and Indicator Circuit diagrams

• Power supply failure alarm
• Theft preventer alarm
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• A simple electronic buzzer
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Audio electronic circuits list

• Stereo Channel Selector
• Low cost intercom using transistors
• Infrared Head Phones
• Use the CD-ROM drive as a audio CD player without the computer
• Audio Visual Indicator for Telephones
• Ultrasonic pest repellent

Circuits for Cars/Motorcycles

• Charge Monitor for 12V lead acid battery.
• Wiper Speed Control
• Dome Light Dimmer for Cars
• Car anti theft wireless alarm.

Computer/PC Hardware Circuits :

• Control electrical appliances using PC
• Simple Analog to Digital Converter
• PC based Frequency Meter
• 7 segment rolling display using PC

Design Ideas :

• Soft ON/OFF switch

Fun/Games Circuits :

• Electronic Scoring Game
• JAM(Just A Minute) Circuit
• Flashy Christmas Lights
• TV remote control blocker

Signal/Sequence/Misc. Generators :

• Simple IF Signal Generator

Home/Garden related Circuits :

• Ultrasonic Pest Repeller
• Programmable Digital Code Lock
• Pot plant water tester

Lights & LED Circuits :

• Light Flasher (blinking lights)
• Automatic Dual output Display
• Emergency Light
• Automatic Room Lights
• Running Message Display

Motor Circuits :

• Automatic Speed Controller for fans & Coolers
• Soft Button type Motor Direction Controller
• Super simple stepper motor controller
• Discrete component motor direction controller

Music related Circuits :

• Digital Volume Control
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< Oscillator Circuits :

• Simple variable frequency oscillator
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Power Supply (PS) Circuit diagrams :

• Negative supply from single positive supply
• Self switching Power Supply
• Ultra low drop linear voltage regulator

Radio,transmitter,receiver circuits :

• Car anti theft wireless alarm.
• Long range FM transmitter
• Remote control using VHF modules
• 40 meter Direct Conversion Receiver

Remote Control Circuit diagrams :

• Remote control using VHF modules
• Remote control using telephone
• A simple Remote control Tester
• Clap Activated Remote
• Radio Remote Control using DTMF
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Robotics related Circuits :

• Magnetic proximity sensors
• Color Sensor
• Super simple stepper motor controller

Sensors :

• Magnetic proximity sensors
• Dew sensor
• Color Sensor
• Metal Detector
• Optical toggle switch using a single Chip

Telephone Circuit diagrams :

• Telephone Ringer using 556 dual timers
• Two line intercom plus a telephone changeover switch
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• Having secrecy in parallel telephones
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Test & Measurement Circuits :

• High Resistance Voltmeter
• A simple Remote control Tester
• Contactless Mains Voltage Indicator
• Zener Diode Tester