Discussion in 'General Electronics Chat' started by poorvaja1992, Nov 28, 2011.

  1. poorvaja1992

    Thread Starter New Member

    Apr 5, 2011
    I am trying to construct a remote controlled switch. The ckt involves TSOP 1738. Can any TV remote be used as the transmitter(38kHz)??
    I tried using a tv remote which i had but the output at the output pin of the TSOP always remains at 2.05 V!!
    Can anyone plz help me with dis??:confused:
  2. Audioguru

    New Member

    Dec 20, 2007
    TV remotes use many frequencies up to 56kHz. There were 7 different TSOP17xx frequencies but it is not made anymore.

    The TSOP1738 uses a filtered 5V supply. With no signal its output is 5V with almost no current. Its output goes to near 0V when it detects a burst of 38kHz.
    poorvaja1992 likes this.