Schematic Diagrams

Schematic Diagrams

Useful schematic and wiring diagrams. ✔ ✔ Enjoy electronic circuits, let your idea comes to hardware

Dash Light Wiring Diagram Of 2000 Plymouth Breeze

The schematic circuit connection that will be shown here is the ash light wiring diagram of the 2000 Plymouth Breeze. Before attempting any wiring work on your Plymouth vehicle, we suggest you to first read and understand the wiring schematic comprehensively. The parts you will see inside this wiring diagram of 2000 Plymouth Breeze will […]

How to build Digital Remote Thermometer

Description This circuit is intended for precision centigrade temperature measurement, with a transmitter section converting to frequency the sensor”s output voltage, which is proportional to the measured temperature. The output frequency bursts are conveyed into the mains supply cables. The receiver section counts the bursts coming from mains supply and shows the counting on three […]

Honda CR-V 1997 Car Wiring Diagram

This is the complete wiring diagram for Honda CR-V 1997. You will find the wiring diagrams for each Honda CR-V electrical module such as Rear Wiper/Washer Circuit, Front Wiper/Washer Circuit, Warning System Circuits, Supplemental Restraint Circuit, Liftglass Release Circuit, Starting Circuit, Power Window Circuit, Power Door Lock Circuit, Cooling Fan Circuit, Air Conditioning Circuits and […]

Battery Characterizer

How to build USB Power Injector For External Hard Drives

Description A portable USB hard drive is a great way to back up data but what if your USB ports are unable to supply enough “juice” to power the drive? A modified version of the Silicon Chip Usb Power Injector is the answer. For some time now, the author has used a portable USB hard […]

5 Zone alarm circuit

This is a complete alarm system with 5 independent zones suitable for a small office or home environment. It uses just 3 CM IC`s and features a timed entry / exit zone, 4 immediate zones and a panic button. There are indicators for each zone a “system armed” indicator. The schematic is as follows: Circuit […]

a A Basic RF Transmitter for PIR Sensors

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alarm control keypad

The IC is a quad 2 input “AND” gate, a CMOS 4081. These gates only produce a HIGH output, when BOTH the inputs are HIGH. When the key wired to `E` is pressed, current through R1 and D1 switches Q5 on. The relay energises; and Q5 is `latched on` by R8. Thus, the Alarm is […]

active ir motion detector

Project Objectives To explore how different motion detectors operate. To successfully build and test an ambient-light-ignoring active IR motion detector. Background There are a wide variety of motion detectors available currently. To allow a better understanding of motion detectors, the following section provides a detailed description of a few different types. Ultrasonic Motion Detectors Ultrasonic […]

Combination Lock (PIC16F84)

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digital combination lock

The circuit above above makes use of the CMOS 4017 decade counter IC. Each depression of a switch steps the output through 0 – 9. By coupling the output via an AND gate to the next IC, a predefined code has to be input to create the output. Each PBS switch is debounced by tw1o […]

electronic combination lock

This circuit is an Electronic Locker. It is controlled by a switches combination (by a code). There is a switch matrix on the door of the locker. This one is a unit of switches connected into 4 arranged of 4 columns for a total of eight terminals. When we press on a switch, this one […]

Electronic door codelock (PIC16F84)

Electronic lock

emergency light and alarm

Parts: R1____________220K 1/4W Resistor R2____________470R 1/2W Resistor R3____________390R 1/4W Resistor R4______________1K5 1/4W Resistor R5______________1R 1/4W Resistor R6_____________10K 1/4W Resistor R7____________330K 1/4W Resistor R8____________470R 1/4W Resistor R9____________100R 1/4W Resistor C1____________330nF 400V Polyester Capacitor C2_____________10΅F 63V Electrolytic Capacitor C3____________100nF 63V Polyester Capacitor C4_____________10nF 63V Polyester Capacitor D1-D5________1N4007 1000V 1A Diodes D6______________LED Green (any shape) D7___________1N4148 75V 150mA […]

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