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  • Low Pass Active Filter (LF351)

    2015-01-12 07:39:36113

    This article describes the Low Pass Active Filter (LF351). The content is very simple, very helpful. Components in this article can help you understand...

  • Digital Voice reproduction

    2015-01-12 07:30:08112

    Digital voice recorders vary in storage capacity, though many offer 2GB of built-in storage. A few come with less built-in capacity and some are equipp...

  • Digital Sample And Hold

    2015-01-12 07:26:5488

    If you need to hold an analog signal for infinite period then this digital sample and hold circuit is the solution.? This circuit uses a Exar XR-2240 p...

  • Frequency Demodulation

    2015-01-12 06:58:0984

    PLL Application Frequency Demodulation Using NE-SE 565 IC fm detector Frequency demodulation or detection can be obtained directly by using the PLL cir...

  • Current-Driven Sallen Key Filter Circuit

    2015-01-12 06:35:2573

    The low-pass Sallen-Key filter is staple for designers because it contains few components (A). By redesigning the filter, a current to voltage conversi...

  • How to build Single Op-Amp Bandpass Filter

    2015-01-12 06:16:44157

    Description A bandpass filter passes a range of frequencies while rejecting frequencies outside the upper and lower limits of the passband. The range o...

  • SVC Filter design program

    2015-01-12 05:24:4781

    SVC filter is a program designed to expedite the design and analysis of lowpass (and highpass) filters with nearest 5% component values. SVCfilter is 3...

  • Pulse Modulation Tutorial

    2015-01-12 05:19:0671

    Pulse modulation consists of switching the carrier on and off as required. Fig.1 shows a continuous wave carrier (CW). Fig.2 shows the carrier being sw...

  • Pulse Width Modulation Dc Motor Control electronic circuit d

    2015-01-12 04:33:3566

    Often, people attempt to control DC motors with a variable resistor or variable resistor connected to a transistor. While the latter approach works wel...

  • How to build Controlling a relay with a digital logic level.

    2015-01-12 04:21:1066

    Description The schematic below illustrates 4 methods of controlling a relay with a digital logic signal. Figure (A) can probably be used in most cases...

  • Linear Detector for AM Demodulation

    2015-01-12 04:01:03129

    We can simply a rectifier using a linear detector. Its not only have no gain, but also no distortion. An example from two op-amps is the easy one as sh...

  • Long Period SCR Timer (C106D)

    2015-01-12 03:16:00104

    This article describes the Long Period SCR Timer (C106D). The principle is very simple, very practical. The circuit components can help you understand ...

  • Digital bike tachometer circuit

    2015-01-12 02:57:53107

    This digital DIY tachometer for bikes uses two reed switches to get the speed information of the bicycle. The reed switches are installed near the rim ...

  • Schematic Diagram of Dashboard Digital Voltmeter

    2015-01-12 02:31:16194

    If you want to try to make a dashboard digital voltmeter, the illustration below showsThe Schematic Diagram of Dashboard Digital Voltmeter. This Dashbo...

  • Speaker Box Filter Designer

    2015-01-12 02:16:2474

    Circuit Designers Speaker Box Filter Designer software is a free calculator that helps you to design passive audio filters . This passive filter design...

  • Variable Low-Pass Filter Circuit

    2015-01-12 02:01:281000

    This second-order low-pass filter uses a 741 op amp and is tuneable from 2.5 kHz to 25 kHz. This circuit is useful in audio and tone control applicatio...

  • Bootstrapped Twin-T Notch Filter Produces High Q

    2015-01-12 01:42:15138

    This is a Bootstrapped Twin-T Notch Filter circuit. This circuit can generate high Q by combining the twin T with LM102 voltage follower. The generated...

  • Diode Radio For Low Impedance Headphones(AA119)

    2015-01-12 01:39:1871

    This article describes Diode Radio For Low Impedance Headphones (AA119). The principle is very simple, very practical. The circuit components can help ...

  • 9 Second Digital Readout Timer(CD4510)

    2015-01-12 01:21:0169

    This article describes the 9 Second Digital Readout Timer (CD4510). The content is very simple, very practical. The components of the article can help ...

  • Digital volume control using CD4067

    2015-01-12 01:13:49523

    Digital volume control circuit using the IC CD4067. Required to operate the voltage regulator circuit to 12 volts. IC1 (555) is very good to serve as a...

  • Low-Drift High-Impedance JFET DC Voltmeter (MPF102)

    2015-01-11 23:05:05146

    This article describes the Low-Drift High-Impedance JFET DC Voltmeter (MPF102). The content is very simple, very helpful. Components in this article ca...

  • Types of Digital Oscilloscope

    2015-01-11 22:59:2280

    Digital Oscilloscope Digital Oscilloscope Digital Oscilloscope: Oscilloscope is an electronic machine used to characterize the voltage of an electronic...

  • Tube Clock digital

    2015-01-11 22:40:3166

    This clock is made up of four IV-17 alphanumeric VFD tubes. As it ships, the electronics come in two parts the base with the microcontroller and the sh...

  • How to build 2nd Order Opamp Filters

    2015-01-11 22:19:3772

    Description The figures below illustrate using opamps as active 2nd order filters. Three 2nd order filters are shown, low pass, high pass, and bandpass...

  • Low-Capacitance High-Impedance Video Buffer (2N5139)

    2015-01-11 22:14:2986

    This article describes the Low-Capacitance High-Impedance Video Buffer (2N5139). The content is very simple, very helpful. Components in this article c...

  • Temperature Probe for Digital Multi Meter (MAX6610)

    2015-01-11 21:29:1073

    This is a simple temperature measurement probe circuit. This circuit measures temperature either on a PC board or at the probe tip to which contains th...

  • ADV7123 Digital-to-Analog Converter Connection Diagram and D

    2015-01-11 21:05:2776

    This digital-to-analog converter (DAC) integrated circuit is designed for lowest noise performance, both radiated and conducted noise. A recommendedcon...

  • 74HC02 Digital Tubes Level Test Circuit

    2015-01-11 20:59:1566

    As shown circuit consists of four 2-input NOR gate 74HC02, series diode 4148 X 2, digital display tubes. The circuit is mainly used as the level of the...

  • How Digital Potentiometer Works

    2015-01-11 20:49:24113

    Nowadays, the digital potentiometer is available. The digital potentiometer is effective to replace the mechanical potentiometers in a number of areas ...

  • 4 order filter with a single IC

    2015-01-11 20:35:0367

    Filters with high orders are designed usually with 2 or more cascaded sections. This order 4 filter need only one OA IC , so we can achieve lower disto...

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