Timeline for PCB "Touch" Button
Current License: CC BY-SA 3.0
5 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jan 26, 2017 at 10:07 | vote | accept | mxcd | ||
| Jan 23, 2017 at 12:16 | history | edited | Douwe66 | CC BY-SA 3.0 |
Added gate resistance as suggested for better immunity to ESD transients
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| Jan 23, 2017 at 12:14 | comment | added | Douwe66 | Good point, I'll add it to the circuit diagram | |
| Jan 23, 2017 at 12:13 | comment | added | stefandz | I would consider adding a 10k resistor between the cathode of D1 and the junction between R1 and the right-hand side of the sensor to limit the instantaneous current into the gate of M1 from a static discharge and help D1 do its work by generally slowing fast edges down. If you find this circuit particularly noise-prone, a 100pF or so capacitor across R1 may help that - you'll have to build it and try it out! | |
| Jan 23, 2017 at 11:49 | history | answered | Douwe66 | CC BY-SA 3.0 |