Free electronic circuit design and schematic diagram
Phase-locked loop is very common in telecommunication, control, and other electronic application. PLL can be used to demodulate FM signal, produce a stable clock signal, or to recover a synchronization signal from noise. Many single chip integrated circuits (IC) are produced for this PLL system, and LM359 is one of them. This PLL is capable to operate up to 5MHz, […]
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Phase-locked loop is very common in telecommunication, control, and other electronic application. PLL can be used to demodulate FM signal, produce a stable clock signal, or to recover a synchronization signal from noise. Many single chip integrated circuits (IC) are produced for this PLL system, and LM359 is one of them. This PLL is capable to operate up to 5MHz, […]
Read moreThis is RTD transmitter calibration video. This video show step by step how to calibrate the RTD transmitter. To calibrate the RTD transmitter the fluke 744 can be used. First Connect the RTD transmitter with the fluke 744. This connection need three wires, but the fluke doesn’t has three connection. So we use the jumper. Here is the tutorial video: […]
Read moreThis is differential pressure transmitter response video. This video demonstrate the different of pressure transmitter response on low and high ports. The pressure transmitter is connected with the battery circuit and the voltmeter is connected in parallel to two hundred fifty ohm resistor. The pressure transmitter has two ports they are high pressure port and low pressure port. First, this […]
Read moreThis is a 4-20mA loop regulation video. This video demonstrate the 4-20mA loop regulation video. In this video, the current is depending only on the pressure that trough the regulation circuit. When there is no pressure, the current still zero, and then when the pressure is applied the current will increase up to 12mA. This current does not depend on […]
Read moreThis is a video about thermocouple calibration. This video shows step by step how to calibrate the thermocouple using the transmitter’s compensation circuit. The thermocouple is calibrated by the fluke model 744 calibrator. First look at the fluke, it shows the temperature is 200 F, using the datasheet of the thermocouple, 200F is equal to 4.907mV. Then connect wire to […]
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The circuits. To produce any output voltage, an external feedback resistors can be added. The sLM2576 is a Switching Regulator that can produce 15, 12, 5, 0r 3.3V output voltage from maximum supply voltage of 60V or 40V. This LM2476 featured with voltage reference, switch and feedback path for use in either the negative boost or the buck saturation voltage […]
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