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  • On-off control SCR with logic gate IC (CD4066)

    2015-01-10 05:56:19163

    This article describes the On-off control SCR with logic gate IC (CD4066). The content is very simple, very helpful. Components in this article can hel...

  • Analog to digital conversion notes (BC547)

    2015-01-10 05:42:0983

    This article describes the Analog to digital conversion notes (BC547). The principle is very simple, very practical. The circuit components can help yo...

  • Digital Volume Control Circuit

    2015-01-10 04:53:3474

    This circuit is digital control made by icds1669. this circuit can use to volume control by push switch in s1 and s2 push botton. this circuit simple a...

  • MM5314N Driven Digital Clock Circuit

    2015-01-10 04:50:12100

    Figure 1 The circuit has been designed to create a digital clock using a single IC MM5314N with all the functions provided in the operation. MM5314 –...

  • Digital thermocouple thermometer

    2015-01-10 04:15:17141

    This digital thermocouple thermometer uses one active component and 15 passive components. With this circuit, both type J and type thermocouples may be...

  • Antialiasing And Sync-Compensation Filter

    2015-01-10 03:50:5179

    Two dual-biquad filter chips and some external components form a multipurpose filter to reconstru ct D/A converter signals. Connected to a converter`s ...

  • Making a Digital Compass

    2015-01-10 03:42:3369

    Introduction This project constructs a digital compass that displays the instantaneous magnetic heading on a 4-digit LCD display. All the really hard w...

  • Temperature to Digital Converter Circuit Diagram using LM35

    2015-01-10 02:20:28176

    LM35 is one of integrated-circuit temperature sensors which can be applied easily as others. This device is sometimes soldered to a small light-weight ...

  • A narrow band pass filter audio presentation

    2015-01-10 02:13:3966

    This article is a narrow band pass filter the audio presentation. To grasp this principle more effective, the proposed combination of text read schemat...

  • Programmable-active-filters

    2015-01-10 01:47:4672

    This is a second-order, low-pass filter with programmable cutoff frequency. This circuit should be driven from a low-source impedance since there are p...

  • Variable Q Twin-T Notch Filter

    2015-01-10 01:33:13102

    This is a Variable Q Twin-T Notch Filter circuit. This circuit is used when low Q is needed. The Lower Q gives some advantages in rejecting the signal ...

  • Digital compass circuit

    2015-01-10 00:34:56104

    Description. Here is the circuit diagram of a very simple and accurate electronic compass using the 1490 digital compass from Dinsmore. The 1490 digita...

  • A digital counter circuit

    2015-01-10 00:26:01102

    This article is an introduction to digital counter circuit. Master the principle is very effective method is to combine text read schematics. A normal ...

  • Inductance Meter Adapter Circuit, Turns Your Digital Voltmet

    2015-01-10 00:25:33258

    This article introduces the Inductance Meter Adapter Circuit, Turns Your Digital Voltmeter to Inductance Meter (74HC132). The content is very simple, b...

  • Digital radar speedometer(74AS04)

    2015-01-10 00:13:0988

    This article describes the Digital radar speedometer (74AS04). The content is very simple, very practical. The components of the article can help you u...

  • Universal active filter

    2015-01-10 00:05:5989

    The circuit as shown gives the bandpass operation the transfer function calculated from FBP(s) = where = 1 s/Qo>0 s2/w02. The cut-off frequency, 0, and...

  • Digital Audio Selector Circuit

    2015-01-09 23:23:09100

    This circuit, uses switched emitter followers, rather than the usual analog switch CMOS chips. This yields better reduction of crosstalk between channe...

  • How to build 9 Second Digital Readout Countdown Timer

    2015-01-09 22:54:1365

    Description Below is a thermostat circuit I recently built to control a 1300 watt space heater. The heater element (not shown) is connected in series w...

  • Multiple-feedback bandpass filter

    2015-01-09 22:41:28148

    The op amp is connected in the inverting mode. Resistor R3 from the output to the inverting input sets the gain and current through the frequency-deter...

  • Digital Step-Km Counter Circuit Schematic

    2015-01-09 21:50:4073

    Max. Range: 9,950 meters with two digits slip it in pants' pocket For walking and jogging This circuit measures the distance covered during a walk. Har...

  • Difference Of Squares Analog Computing

    2015-01-09 20:22:0066

    Because the differential input capability of the AD532, algebraic solution of several interesting functions such as difference of squares, (X2-Y2)/10V ...

  • Digital Remote Thermometer(BC238)

    2015-01-09 20:11:0572

    This article describes the Digital Remote Thermometer (BC238). The principle is very simple, very practical. The circuit components can help you unders...

  • Digital Transmission Isolator

    2015-01-09 19:52:3767

    Digital transmission isolation is important for keeping the digital noise to reach the analog path, thats the benefit for noise isolation. For electric...

  • How to build Variable High-Pass 20HZ to 200HZ Filter

    2015-01-09 19:46:2080

    Description A simple circuit, High-Pass filter, variable between frequencies 20HZ until 200HZ, useful in a lot of cases elaboration of sound signals. T...

  • Sound SCR Switch by IC 1458

    2015-01-09 19:33:29118

    This is a sound switch circuits, It will work only if the loud is overdue. Ideal for player cameras Or you can bring to other use, Its not Fouls, such ...

  • Logic Digital Tester by LM324

    2015-01-09 19:14:29205

    This is Logic Digital Tester Circuit. It uses the level input about 5V and use the integrated circuit LM324. Be Main Part electronics perform Drive All...

  • 300-2500Hz Audio Bandpass Filter circuit diagram

    2015-01-09 19:10:5881

    This is an audio bandpass filter circuit which will filtering the audio frequency from 300Hz to 2500Hz.. The lower and higher audio frequency will be c...

  • Notch Filter: The Circuit’s Diagram and The Design Formula

    2015-01-09 19:09:2698

    Notch filter is known as band-cut filter or band-reject filter. The fuction of this filter is to remove some frequency portion of a signal. The schemat...

  • Adjustable Analog Timer circuit diagram

    2015-01-09 18:57:3174

    This is a very simple adjustable analog timer circuit diagram. You can build this circuit just for fun, for newbie project or may be, this circuit coul...

  • Linear analog coupler

    2015-01-09 17:51:2466

    Although the output is low level and cannot be loaded significantly without harming -accuracy, a single I.C. operational or instrumentation amplifier c...

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