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4-20mA to Voltage Circuit | Electronic Circuit Directory

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Directory of Electronic Circuit and Electronic project for Application. Monday, March 23, 2009. 4-20mA to Voltage Circuit. Isolate 4-20mA to Voltage Circuit. Picture shows an isolator receiver that translates a 4-20 mA. Process current signal into a 0 V to 10 V output. A 1 V to 5 V. Signal appears at the isolator’s output, and a –1 V reference. Applied to output LO provides the necessary level shift. In multichannel applications, the reference can be shared by. With a follower-type output buffer. Differe...

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ADJUSTABLE CURRENT SOURCE Circuit | Electronic Circuit Directory

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Directory of Electronic Circuit and Electronic project for Application. Saturday, April 4, 2009. ADJUSTABLE CURRENT SOURCE Circuit. The HIP5600 can supply a 450 A (20%) constant current. It makes use of the internal bias network. See Figure 27 for bias current versus input voltage. With the addition of a potentiometer and a 10 F capacitor the. HIP5600 will provide a constant current source. IOUT is given. By Equation 13 in Figure 16. FIGURE 16. ADJUSTABLE CURRENT SOURCE. Essentially blow−out proof. Avail...

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PWM Generator Circuit | Electronic Circuit Directory

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Directory of Electronic Circuit and Electronic project for Application. Tuesday, March 24, 2009. PWM Generator with Current Limit Circuit. IC1 astable gives a fixed square wave at pin 3, C1 and R1 derive. US trigger pulses from IC1 and this will trigger IC2 monostable or. Single shot, the voltage at pin 5 of IC2 will change the pulse width. Output of IC2, to get it working all the three RC combinations. Have to be figured out. A Simple PWM Circuit Based on the 555 Timer. Opamp PWM Generator Circuit.

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Pulse Generator Circuit | Electronic Circuit Directory

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Directory of Electronic Circuit and Electronic project for Application. Wednesday, April 1, 2009. Transistor Schmitt Trigger Oscillator. The Schmitt Trigger oscillator below employs 3 transistors, 6. Resistors and a capacitor to generate a square waveform. Pulse waveforms can be generated with an additional diode. And resistor (R6). Q1 and Q2 are connected with a common. Emitter resistor (R1) so that the conduction of one transistor. Causes the other to turn off. Q3 is controlled by Q2 and. From 5V to 15V.

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Relay Toggle Circuit | Electronic Circuit Directory

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Directory of Electronic Circuit and Electronic project for Application. Sunday, March 29, 2009. Relay Toggle Circuit Using a 555 Timer. This 555 timer circuit below toggles a relay when a button is. Pressed. Pins 2 and 6, the threshold and trigger inputs, are. Held at 1/2 the supply voltage by the two 10K resistors. When the output is high, the capacitor charges through the. 100K resistor, and discharges when the output is low. When. The button is pressed, the capacitor voltage is applied to pins. To con...

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Intercom circuit | Electronic Circuit Directory

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Directory of Electronic Circuit and Electronic project for Application. Tuesday, March 24, 2009. 2-Line Intercom-Cum-Telephone Line Changeover. The circuit presented here can be used for connecting two. Telephones in parallel and also as a 2-line intercom. Usually a single telephone is connected to a telephone line. If another telephone is required at some distance, a parallel. Line is taken for connecting the other telephone. In this. Simple parallel line operation, the main problem is loss of. Rather t...

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HOW TO CALCULATE AND SELECT A Electronic Circuit HEAT SINK | Electronic Circuit Directory

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Directory of Electronic Circuit and Electronic project for Application. Saturday, March 20, 2010. HOW TO CALCULATE AND SELECT A Electronic Circuit HEAT SINK. HOW TO CALCULATE AND SELECT A HEAT SINK FOR A GIVEN SOLID STATE RELAY APPLICATION. The thermal model representing the above configuration includes the following elements:. The selected SSR with specified thermal impedance (RΘ ssr), forward voltage drop (Vf), and maximum allowed internal operating temperature (Tj). How to verify the proper Heat Sink.

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4-20mA Current-Loop Transmitter Circuit | Electronic Circuit Directory

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Directory of Electronic Circuit and Electronic project for Application. Tuesday, April 7, 2009. 4-20mA Current-Loop Transmitter Circuit. The XTR117 is a precision current output converter designed. To transmit analog 4-20mA signals over an industry-standard. Current loop. It provides accurate current scaling and output. The on-chip voltage regulator (5V) can be used to power. External circuitry. A current return pin (IRET) senses any. Current used in external circuitry to assure an accurate. Possible inp...

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USB to RS485 Circuit | Electronic Circuit Directory

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Directory of Electronic Circuit and Electronic project for Application. Thursday, March 26, 2009. USB to RS485 Circuit. But first, a quick look at RS-485. The interface popularly known. As RS-485 is an electrical specification for multipoint systems that. Use balanced lines. RS-485 is similar to RS-422, but RS-422 allows. Just one driver with multiple receivers, while RS-485 supports. Multiple drivers and receivers. The specification document, TIA-485-A, defines the electrical. Many as 256 nodes. To conv...