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Beckman model W industrial-type pH meter is d-c amplifier designed for measuring potentials generated by pH-sensitive electrodes. Output will drive most recorders. R32 is used only with 4 to 14 pH meter, and R33 only with -1 to 9 pH meter. -G. C. Car. roll,....
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Using the circuit depicted in the schematic diagram below we can monitor the heart pulses of patient. This circuit buffer and amplify the heart pulses, and the....
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Resistor change in ECM Mic Preamplifier schematic diagram. The electret condenser microphone (ECM) contains a very sensitive microphone element and an internal FET preamp, a power supply in the range 2 to 10 volts DC is therefore necessary. Suitable ECM`s....
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The LMV116 is an enhanced slew rate version of the LMH6645. The high speed LMH devices are very sensitive to output capacitance (normally they drive back-terminated loads) and normally start oscillating with direct capacitive loads as low as 50pF. I just....
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This FM transmitter electronic project works in FM band and it has a transmission power around 250mW. This FM transmitter electronic circuit is very simple and is based on some common transistors and electronic parts. T1 transistor can be a BC107, BC171 or....
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This is a 2 MHz crystal circuit using CMOS pair. This circuit is ideal for uses in digital watches and clock because this circuit has low power drain. The oscillator in this circuit is built by connecting the One CMOS transistor pair from CA3600E array with....
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IC TA8210AH By using this you can apply a series of audio power amplifier is the car audio system. In general, all the speakers in the car using a subwoofer speaker, and woofer. Because the car is not big room so the sound is being required is not too high.....
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This PIC-based hardware circuit accepts texts from a PS/2 keyboard and converts it into a morse code audio signal....
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Circuit diagram is designed to strengthen the input of a telescopic whip antenna. The Preamplifier is designed to cover the medium waveband from about 550Khz to 1650Khz. Tuning voltage is supplied via RV2, a 10k potentiometer connected to the 12 Volt power....
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The Biquad consists of two successive integration stages followed by an inverting stage. The entire group has a feedback loop from the front to the back consisting of R1 which is chiefly responsible for controlling the center frequency, ‰o. The first stage....
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What is the meaning of the picture above The above picture is a miniature audio amplifier and very simple. Here I will give an audio amplifier schematic is very simple which only requires a few components only, can be seen under this scheme. See from above....
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L2 RFC (resistance 1MOhm with wrapped around her inductor of enough coils from fine isolated wire. Scratch of utmost inductor and you stick in utmost the resistance making thus a parallel L-r circuit. ) With their C7, C8 we adapt the resistance of aerial....
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A simple circuit for monitoring the fuel level in vehicles. It gives an audiovisual indication when the fuel level drops alarmingly below the reserve level, helping you to read more †’..
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I have been working on driving an analog VU meter based on the sound going out the Raspberry Pi`s audio outputs. This now works! The music [1] is playing from a Raspberry Pi, with software running on the Pi digitally sampling the peak output audio level and....
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This is the electronic schematic of the homebuilt SONAR. Only one piezoelectric transducer is used for both transmit & receive. This transducer is switched from TX to RX via the four 4016 switches. A high gain amplifier stage & rectifier translates the....
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VU meter or a volume unit meter is a device used for indicating the music volume output from an amplifier or a loudspeaker system. It may be also considered as a device for displaying the PMPO of the amplifier at a particular volume setting. Though the unit....
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The TDA1029 is a dual operational amplifier (connected as an impedance converter) each amplifier having 4 mutually switchable inputs which are protected by clamping diodes. Signal-sources switch can be made in various mods : Electronic parts required by this....
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All feature crystal-controlled transmitters and tunable superregenerative receivers with RF preamplifiers designed for operation on the 2, 6 or 10 meter amateur bands. The highly sensitive receivers pull in signals as low as 1 microvolt and produce complete....
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The M7 capsule is a center-terminated, dual-diaphragm design, and supports three polar patterns. A switch on the power supply allows selection of Cardioid, Figure-of-8, or Omnidirectional patterns. The amplifier circuit is similar to some of Gefell`s....
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A 52 MHz third overtone crystal is typically 30 ohms at its series resonance according to manufacturer specifications. The crystals used for the prototypes have nearly ten times lower series resistance but they were very expensive. An oscillator can be seen....
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An audio signal applied to VI is passed through the operational amplifier 741, U2. After being amplified, the output signal V2 is sampled and applied to a negative voltage doubler / rectifier circuit composed of diodes CRI and CR2, with the capacitor C1. The....
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At high speed, visually checking your speedometer to keep under maximum speed can be dangerous. It will be much safer if we put an audio alarm system to give a....
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This scan is from my old ETI Circuits #2 from the 70 ²s. It`s about the best op-amp info you are likely to find. With a bit of knowledge, these six circuits are an instant ready-reckoner and allow you to do almost anything! If you want to learn then they are....
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At this point you whistle into the receiver and the Infinity Bug will pick up the line. The high-gain amplifier in the Infinity Bug will pick up the audio at the place where it is located. It can only be assembled on the PC board supplied in the kit as the....
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An impressive little machine gun sound effect generator circuit is discussed here. Once built can be integrated with any audio amplifier to experience a roaring bullet studded war like simulation. A small hobby project which can be tried by all electronic....
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This is an AM demodulator which is not affected by phase errors in the demodulated signal. Phase error is a type of error commonly found in simple diode/low pass filter demodulators. At the input stage is an AC amplifier which is adjustable through P1. A1....
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This circuit was submitted by Graham Maynard from Newtownabbey, Northern Ireland. It has an exceptionally fast high frequency response, as demonstrated by applying an 100kHz squarewave to the input. All graphs were produced using Tina Pro...
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The main component of this circuit is an operational amplifier (such as the 741 or 351), configured as an amplifier whose feedback circuit is a diode bridge full-wave rectifier. An ammeter is attached to the rectifier circuit as shown in Figure 1 so that the....
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The circuit uses a dual operational amplifier IC, the 1458, which is a single IC package that houses two individual op-amps. In this circuit, the first op-amp is used as a voltage follower whose output is used to charge the capacitor C1 through D1. As such,....
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4 Stage FM Transmitter This is the FM transmitter circuit which apply 4 radio frequency stages, that are a VHF osci Wholesale fmuser CZE CZH FM Transmitter,Fm Transmitter % FM Radio Transmitter for sale ?czhfmtransmitter,OEM ODM Low Power Fm Transmitter....
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Here is a schematic of a good quality AM radio receiver circuit. The heart of the circuit is MK484 AM radio IC. It is a high sensitivity and high quality IC, it has only three leads and comes in TO92 package and require only few external parts because all....
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The following circuit shows about 14 Watt Compact Fluorescent Electronic Ballast Circuit Diagram. Features: similar to a 16 Watt circuit, 14 Watt ....