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YS-FST8 supply problem...Or...is it?

Discussion in 'Electronic Projects Design/Ideas/Reviews' started by Mr CCE, Mar 13, 2010.

  1. Mr CCE

    Mr CCE New Member

    Sep 15, 2009
    Hi all,
    I'm building a circuit for remote control.
    For that purpose I'm using PIC16F877A to create data that I want to send, the IC pair 145026/27 as data encoders, and an RF module(Tx is YS-FST8,Rx is YS-CWC6).

    All the IC's need 5v supply, and the Tx works fine up till 12V. Thing is, the circuit works great, but as soon as I plug the Tx into the PCB of my circuit, the whole circuit just turns off!

    I'm using a 9V battery with a resistor and zener diode(Vz=5V) to get my desired 5V.
    What gives? knowing that I've done the same circuit previously this year and it worked just fine!!!

    + --------| 100 ohm |---------
    9V ...........................................zener 5V

    Any advice? thx a lot in advance
    Last edited: Mar 13, 2010

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