Timeline for A circuit that temporarily keeps the toy on after pressing the button
Current License: CC BY-SA 4.0
13 events
| when toggle format | what | by | license | comment | |
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| Feb 23 at 22:13 | comment | added | JSK | I tried by myself to correct this modifications, could you just tell me what to exactly connect? | |
| Feb 21 at 9:15 | comment | added | JSK | I would be thanksful for that so I would be possible for me to use it @Marcus | |
| Feb 21 at 8:52 | comment | added | JSK | Could you please update your schematic with that? I would be thanksful ( now I have to press button twice to make it work) @MarcusMüller | |
| Jan 4 at 11:11 | comment | added | Marcus Müller | @Kuba ah so regarding the turn-off: if you used a dual (or more) inverter chip, you could use the output that is currently only controlling the optocoupler, and add another RC "delay" (a few milliseconds) to pull down Q1's gate | |
| Jan 3 at 22:27 | comment | added | JSK | Thank you for the proposed circuit. It is almost working but there are still the issues which I wrote before, maybe there is something what can be done more | |
| Jan 3 at 16:59 | comment | added | Marcus Müller | @Kuba absolutely, you can substitute any other MOSFET. The 150 mΩ one was what I guesstimated to be OK based on length an thickness of cabling, but if it's too much, sure, use a better one! | |
| Jan 3 at 16:23 | comment | added | JSK | Link to the falstad simulation of the circuit: tinyurl.com/ymuxgzcf | |
| Jan 3 at 16:22 | comment | added | JSK | I simulated the circuit. After each button press it has to be reseted (by pressing button again). Another thing is that the current flows from +BATT to the GND through the R6 even if switched off. For 1k resistor this current is 4mA. The last thing to think about is question about using SSR on the output with 150mΩ resistance. This gives us noticeable voltage drop on the ouput when the current would be 1A. Is it possible to use instead of SSR two mosfets like AO3400 with 48mΩ resistance? N-mosfets with connected gates to the NOT output, sources to the GND and drens to the toy? | |
| Jan 2 at 23:39 | history | edited | Marcus Müller | CC BY-SA 4.0 |
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| Jan 2 at 23:30 | history | edited | Marcus Müller | CC BY-SA 4.0 |
added 153 characters in body
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| Jan 2 at 23:24 | history | edited | Marcus Müller | CC BY-SA 4.0 |
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| Jan 2 at 23:16 | history | edited | Marcus Müller | CC BY-SA 4.0 |
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| Jan 2 at 22:56 | history | answered | Marcus Müller | CC BY-SA 4.0 |