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My question is about TTP223 module. It is operated on 3-5 Volt DC. But how can I run it on AC supply? I mean I don't want to use DC source. I want to run MOSFET instead of Relay by this.

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    \$\begingroup\$ How can you power a module that requires DC power without having a DC source? What's wrong with an AC input power source that generates the required 3-5 VDC at its output? Explain what you are trying to do. \$\endgroup\$
    – Barry
    Aug 9, 2020 at 22:29
  • \$\begingroup\$ i mean by use of resistor and diode. will it work on pulsating dc power. TTP223 is of 10bucks and to operate i have to use a 2usd power supply. \$\endgroup\$
    – Mahesh Gupta
    Aug 13, 2020 at 18:21

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