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i'm making a fall prevent circuit and i want to make sure that this circuit is correct which i made

I would like to check because I don't have enough budget and time to buy many other parts

tilt sensor circuit

and this is my tilt sensor datasheet tilt sensor datasheet

this is my questions

  1. i put the C2, C3 Electrolytic capacitors (as the datasheet says)

    can i replace C2, C3 to ceramic capacitors? (smd type 0608 size)

  2. do I need to add electrolytic capacitors or ceramic capacitors to the buzzer for the life of the buzzer

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  • \$\begingroup\$ How does it prevent "falls" --> i'm making a fall prevent circuit <-- do you mean an excess tilt angle warning system? Where do bat_in and bat_out connect? Should there be connectors for the input power and the bat connections? What's an ADW11? \$\endgroup\$
    – Andy aka
    Jan 15, 2023 at 16:24
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    \$\begingroup\$ rated current of tilt sensor is 2 mA MAX. Current Ib =~ 5 mA ... and buzzer current = ~ 8 mA ... Some things to check. \$\endgroup\$
    – Antonio51
    Jan 15, 2023 at 16:31
  • \$\begingroup\$ do you mean an excess tilt angle warning system? - yes, sorry i'm not good at english rated current of tilt sensor is 2 mA MAX - yes, for using buzzer i think i have to add another transister \$\endgroup\$
    – KimJiHoon
    Jan 16, 2023 at 0:19
  • \$\begingroup\$ i found a new tilt sensor SW-520D 12V / 20mA i think i can use this \$\endgroup\$
    – KimJiHoon
    Jan 16, 2023 at 0:55
  • \$\begingroup\$ it didn't work.. \$\endgroup\$
    – KimJiHoon
    Jan 16, 2023 at 7:43

1 Answer 1

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Something like this could be used ...
The capacitor is used at the start (24V effectively applied to the relay for working).

enter image description here

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    \$\begingroup\$ thank you! i'll try that and i added 470u/16V capacitor between transistor's base-ground because the output voltage very unstable(shakes) when the tilt sensor is almost horizontal. \$\endgroup\$
    – KimJiHoon
    Jan 17, 2023 at 10:11
  • \$\begingroup\$ Do it ticking "right" answer ... \$\endgroup\$
    – Antonio51
    Jan 17, 2023 at 12:55

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