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Telemetry System (TC9400)

2017-06-04 02:48  
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This article describes the Telemetry System (TC9400). The principle is very simple, very practical. The circuit components can help you understand better grasp this principle. For example, in this circuit, you can go to find and buy these components: TC9400.

The TC9400 converts the analog input (Vin) ito frequencies (10Hz to 100KHz) which can be used to modulate an RF transmitter in a telemetry system. At the other end, The RF signal is picked up by receiver and it’s demodulated back into the 10Hz to 100KHz spectrum.

TELEMETRY1 circuit schematic

A count linearly proportional to the original analog voltage (Vin) is given by connecting this signal to a frequency counter. The counter can be replaced by a TC9400 used in the F/V mode if a linearly-proportional analog output voltage is required. [System's block diagram source: Microchip Application Note]



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