Answer / laxmidhar nayak(nmiet,bbsr)

because in transmitter,


transmitter takes:12v dc,
controller takes :5 v dc,
for noise:4v dc,
others:3v dc,
TOTAL:24 V DC

Answer / naveen rai

it is standard value followed all over the world..

Answer / kapil sharma

Because most of the electronics ICs and devices DESIGNED FOR 0-24 VDC

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