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  • Am Fm Simultaneous Transmitter Using Digital Ic electronic c

    2015-01-13 11:49:3075

    Source: Electronics Lab Reprinted Url Of This Article: http://www.free-circuits.com/circuits/radio/245/am-fm-simultaneous-transmitter-using-digital-ic ...

  • Digital Volume Control

    2015-01-13 11:47:5992

    circuit diagram Circuit of a digital volume control using six discrete ICs, including a 5V regulator, is presented. IC1 (555) is configured to function...

  • Arduino and DS18B20 – 1-wire digital thermometer

    2015-01-13 11:31:10100

    Finally got this DS18B20 working. Actually three of them. And in two modes. Parasite power mode and main mode. A 4.7K ohm resistor is the key. Starting...

  • All-Pass Filter (1st Order)

    2015-01-13 11:11:3973

    This is a 1st order ALL pass filter circuit. All frequencies are allowed at the same gain by this circuit. Here is the schematic diagram of the circuit...

  • TC9400 Analog Frequency Meter (TC9400)

    2015-01-13 11:09:2677

    This article describes the TC9400 Analog Frequency Meter (TC9400). The content is very simple, very helpful. Components in this article can help you un...

  • EMI RFI Mains Filters

    2015-01-13 10:24:0681

    EMI RFI Filters are required in two situations, to prevent EMI from an Electronic Equipment Like A Dimmer, Thyristor Drive, SMPS or Switcher affecting ...

  • TC9400 VFC for PLL FM Demodulation

    2015-01-13 09:48:2270

    FM demodulation can be done with phase locked loop (PLL), and this method is? common in high-end communication system. This system uses TC9400 that has...

  • Audio noise filter circuits (TL071)

    2015-01-13 09:13:44259

    This article describes the Audio noise filter circuits (TL071). The principle is very simple, very practical. The circuit components can help you under...

  • Noise Filter Signal using FET 2N3819

    2015-01-13 09:12:1895

    This be Noise Filter Circuit for filter the frequency disturbs all well. By use base type equipment the FET transistor number 2N3819 and Electronic par...

  • Digital Keypad Entry Keyless Security Lock

    2015-01-13 08:34:0389

    The Original Digital Lock is a bump proof keyless security lock, requiring no wires, no batteries and no keys. Many of the products have a lifetime war...

  • Bandpass Filter

    2015-01-13 07:49:58174

    Gyrators are synthetic inductors, which are often used to form bandpass filters. As shown in the two examples here, the active buffering device can be ...

  • Pulse Width to Analog Voltage Demodulator

    2015-01-13 07:16:5978

    This is a schematic diagram of a pulse width to analog demodulator circuit. This circuit is used to demodulate the pulse width to analog voltage level....

  • Multiple Feedback Bandpass Filter (CD4001)

    2015-01-13 07:08:4791

    This article describes the Multiple Feedback Bandpass Filter (CD4001). The content is very simple, very helpful. Components in this article can help yo...

  • Wideband, High Input Impedance, Gain = 1000 Amplifi er

    2015-01-13 06:59:5466

    View Full Size Image View Original Datasheet The gain is distributed equally between four amplifier sections in cascade, so the gain of each section is...

  • Digital Voltmeter electronic circuit diagram

    2015-01-13 06:47:5477

    The ICL7107 is a 3 1/2 digit LED A/D convertor. It contains an internal voltage reference, high isolation analog switches, sequential control logic, an...

  • Twin-T Notch Filter

    2015-01-13 06:47:36340

    This is a Twin-T Notch Filter circuit. This circuit is a filter that can remove a certain frequency band. This is a passive filter that uses two filter...

  • DUBwise?Digital UFO broadcasting with intelligent service eq

    2015-01-13 06:32:5162

    You love to play remote control toys? If you did, then this mikrokopter is what you're been searching all the time... This mikrokopter is simply a cool...

  • A 20-kHz, Third-Order Low-Pass Filter (OPA335)

    2015-01-13 06:06:36120

    This article describes A 20-kHz, Third-Order Low-Pass Filter (OPA335). The content is very simple, very helpful. Components in this article can help yo...

  • Digital TV, what is DTV?

    2015-01-13 05:56:0874

    What is digital TV? Digital TV, often abbreviated as DTV, is the broadcasting of television via digital signals – the pictures and sound are converte...

  • Digital Thermometer Circuit

    2015-01-13 05:54:3583

    PIC16F84A Digital Thermometer Circuit Thedigital thermometer circuitis built, almost all by using the temperature sensor of some form of discrete compo...

  • Handling the Digital Input Output in AVR Micro Controllers

    2015-01-13 05:54:1073

    I have already discussed about few solutions to get into AVR programming. Now this is the first article with programming. Let us start with the basics....

  • Subwoofer filter

    2015-01-13 04:50:14126

    Description. Here is the circuit diagram of an opamp based subwoofer filter. Audio frequencies below 200Hz are considered to be in the subwoofer range....

  • Digital Step-Km Counter

    2015-01-13 04:16:3569

    Max. range: 9.950 meters with two digits Slip it in pants' pocket for walking and jogging Circuit diagram Parts: R1,R3 22K 1/4W Resistor R2 2M2 1/4W Re...

  • DS1821 Programmable Digital Thermostat and Thermometer

    2015-01-13 04:12:5092

    Introduction.We have the ability to quickly develop a small kit which will allow a user to program DS1821s for use as thermostats.The kit will consist ...

  • Car subwoofer filter

    2015-01-13 03:53:1182

    Description. Here is the circuit diagram of a simple subwoofer filter that can be operated from a 12V DC supply. Such a circuit is very useful in autom...

  • Wideband two-pole high-pass filter

    2015-01-13 03:35:35106

    The circuit provides a 10MHz cutoff frequency. Resistor R3 ensures that the input capacitance of the amplifier does not interact with the filter respon...

  • Digital-tach-dwell-meter

    2015-01-13 03:25:22302

    The core of the circuit is ICZ, PLL (4046 micro phase-locked loop). IC1a and its associated components are buffered input signal is fed to the PLL. The...

  • Digital Mixer

    2015-01-13 03:23:5270

    A simple digital mixer, based on two dual-Schmitt triggers (4583B) and three exclusive-OR gates, uses an RC time-delay circui t to permit easy adjustme...

  • Temperature Probe for Digital Multi Meter

    2015-01-13 02:50:4280

    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...

  • Four-Output Filter Circuit

    2015-01-13 02:39:11149

    The classic state-variable (two-integrator) filter (see Fig. A) is famous for its insensitivity to device parameter tolerances, as well as its ability ...

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