| Electronics > Beginners |
| spdt switch |
| << < (5/7) > >> |
| fixit7:
I should have shown this earlier. https://www.dropbox.com/s/0dyg6wogy341lhd/KEEP_circuit.jpg?dl=0 I have a 3rd wire going from switch to the negative of the buzzer. |
| Richard Crowley:
Your photo shows a DOUBLE pole, double throw (DPDT) switch. But your circuit is using only one "pole". It is common to see double pole switches connected with the poles in parallel. That provides a rather more reliable action for small-signal applications like yours. I would strap the sections in parallel if you don't need double-pole operation. Old-school open slide switch designs like that are not necessarily reliable for very low power applications. |
| ebastler:
--- Quote from: Richard Crowley on May 22, 2019, 11:44:18 am ---Your photo shows a DOUBLE pole, double throw (DPDT) switch. --- End quote --- I see a SPDT switch, and a shadow. |
| fixit7:
--- Quote from: Richard Crowley on May 22, 2019, 11:44:18 am ---Your photo shows a DOUBLE pole, double throw (DPDT) switch. But your circuit is using only one "pole". It is common to see double pole switches connected with the poles in parallel. That provides a rather more reliable action for small-signal applications like yours. I would strap the sections in parallel if you don't need double-pole operation. Old-school open slide switch designs like that are not necessarily reliable for very low power applications. --- End quote --- I must need a double pole switch because when I substituted a spdt switch, the circuit stopped working correctly. |
| Richard Crowley:
--- Quote from: fixit7 on May 22, 2019, 03:12:03 pm ---I must need a double pole switch because when I substituted a spdt switch, the circuit stopped working correctly. --- End quote --- That makes no sense at all. Your circuit clearly shows a SINGLE pole, double throw switch. |
| Navigation |
| Message Index |
| Next page |
| Previous page |