Position: Index > Monitor Circuit >
  • Audio Perimeter Monitor

    2015-01-24 17:49:5974

    Circuit diagram Notes: Using a single cable such as speaker wire or doorbell cable, this circuit can be remotely positioned, for example, at the bottom...

  • Monitor Splitter

    2015-01-24 14:53:3188

    Description A Simple Splitter Driving Two (or even more) PC Monitors Notes The signal sources in the analog output stage of the PC SVGA card see the ri...

  • Intelligent temperature monitoring and control system using

    2015-01-24 14:35:4875

    Part 1 - Schematic Firmware The entire firmware relies on logical decisions at every step. I wrote the code in a way that the complete code is divided ...

  • Electronic Shift Monitor

    2015-01-24 14:07:1369

    The Security Guard duty monitor below, shown in eight circuits at Digital Circuits 1 are examples of logic circuits, i have converted them from the DOS...

  • Single Transistor Lead Acid Battery Monitor

    2015-01-24 12:45:3785

    Using a dual-colour LED and few surrounding components, we can make a very simple battery monitor. This battery monitor circuit is suitable for? monito...

  • Home security monitor system

    2015-01-24 12:25:3769

    When your Monitronics alarm is activated and then triggered by an event like a burglary or fire, Monitronics immediately goes into action. Your home se...

  • Battery Current Monitor Circuit, A Single Supply Operation

    2015-01-24 12:21:2881

    By detecting a voltage drop in resistor connected in series with the battery, we can measure the current flowing in or out of the battery. A simple dif...

  • Flame-monitor

    2015-01-24 11:36:5363

    Monitoring a flame and directly switching a 120-V load is easily accomplished using the Ll4G1 for point sources of light. For light sources which subte...

  • Acid-rain-monitor

    2015-01-24 11:04:0766

    A simple bridge rectifier and a 12-V regUlator powers the MOSFET sensing circuit. The unregUlated output of the bridge rectifier operates the drain sol...

  • Supply Voltage Monitor with 555 IC

    2015-01-24 10:39:4272

    This is a supply voltage monitor circuit, an indicator to show if the power supply is in good condition. Designed using the IC 555 timer, this circuit ...

  • Heartbeat monitor

    2015-01-24 10:35:34134

    ? simple heart-beat transducer can be made from an infrared LED and an infrared phototransistor. ?t works because skin acts as a ref1ecti?e surface for...

  • Single-supply-fault-monitor

    2015-01-24 09:40:4571

    This circuit shows a typical over/under-voltage fault monitor for a single supply. The upper trip points, controlling OUT 1, are centered on 5.5 V with...

  • Monitor Pin Detector (74HC245)

    2015-01-24 08:00:01213

    This article describes the Monitor Pin Detector (74HC245). The content is very simple, very helpful. Components in this article can help you understand...

  • Heartbeat Monitor Circuit

    2015-01-24 07:10:04214

    An IR photodiode, which senses IR skin reflectivity as a result of increased blood volume during the periods that the heart forcibly contracts, is used...

  • Solenoid Current Monitor for Ground Tied Solenoid

    2015-01-24 06:02:4372

    View Full Size Image View Original Datasheet The common mode inputs to the LT1999 switch between Vs and one diode drop below ground.The LT1999 is a hig...

  • PC Heat Monitor(LL4148)

    2015-01-24 04:56:3577

    This article describes the PC Heat Monitor (LL4148). The principle is very simple, very practical. The circuit components can help you understand bette...

  • Supply Voltage Monitor(BC558)

    2015-01-24 03:37:38137

    This article describes Supply Voltage Monitor (BC558). The principle is very simple, very practical. The circuit components can help you understand bet...

  • LT1991 Individual Battery Cell Monitor for a 4-Cell Battery

    2015-01-24 03:18:25103

    View Full Size Image View Original Design Note High input impedance of LT1991 P3 and M3 inputs, ( 150K ), is used to eliminate errors introduced by the...

  • Enlarge Ear Monitoring Circuit Introduction

    2015-01-24 02:17:3692

    This article is about an enlarged ear monitoring circuit brief. Before you look at the diagram, I will first introduce you to one of the circuits two c...

  • AdvancedTCA Four Fuse Monitoring Application

    2015-01-24 01:26:4667

    View Full Size Image View Original LT Journal The LTC4261 negative voltage Hot Swap controllers allow a board to be safely inserted and removed from a ...

  • Darkness monitor CIRCUIT (2N5061)

    2015-01-24 01:06:24166

    This article describes the Darkness monitor CIRCUIT (2N5061). The content is very simple, very helpful. Components in this article can help you underst...

  • Atmospheric Charge Monitor circuit

    2015-01-24 00:31:4871

    This circuit is designed to monitor the atmospheric charge. By observing the increase in the atmospheric charge, it is possible to predict a nearby lig...

  • Two Transistors Lead Acid Battery Monitor

    2015-01-24 00:19:45146

    The circuit of battery monitor below uses 3 separate LEDs. Voltage level between 6v to below 11v will turn the red LED on and will turn off above 11v. ...

  • PC Heat Monitor Circuit

    2015-01-23 22:24:4896

    The PC processor generates very high temperature during its operation which is dissipated by the large heat sink placed above the processor. If the hea...

  • 48V Supply Current Monitor with Isolated Output and 105V Sur

    2015-01-23 21:41:0484

    View Full Size Image View Original Datasheet The HV version of the LTC6101 can operate with a total supply voltage of 105V. Current flow in high supply...

  • Current Monitor Using JFET

    2015-01-23 21:19:02215

    This circuit is Current Monitor. R1 senses current flow of a power supply. The JFET is used as a buffer because lD= lS, therefore the output monitor vo...

  • Plant moisture level monitor

    2015-01-23 20:08:2470

    Description. Here is a simple circuit that will give a visual indication when the soil water level inside your flower pot goes low below a certain limi...

  • PicChess using monitor Vga circuit

    2015-01-23 19:07:0570

    This project is a micro controller chess game. The objective has to be able to play chess on a VGA monitor, including an intelligent computer to play a...

  • Sensus Line Voltage Monitor Circuit

    2015-01-23 18:41:2288

    The Sensus Voltage Monitors (TVM1 and TVM3) gauge line voltage and provide real-time notifications of steady state values, outages and under or over vo...

  • Heart rate monitor

    2015-01-23 18:24:3289

    Light filtering through the finger tip is detected by the cadmium sulphide photoresistor CD1 which forms the feedback network for transducer amplifier ...

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