Electronics > Beginners
spdt switch
MarkF:
Is the switch not working?
OR
Are you looking for a replacement switch for a breadboard?
If so, what kind of breadboard? Solderless or a prototype-board?
fixit7:
--- Quote from: MarkF on May 21, 2019, 04:38:35 pm ---Is the switch not working?
OR
Are you looking for a replacement switch for a breadboard?
If so, what kind of breadboard? Solderless or a prototype-board?
--- End quote ---
With the larger switch, I soldered to the pins and ran the ends to my breadboard.
fixit7:
--- Quote from: Ruaeh123 on May 21, 2019, 12:51:56 pm ---The situation puts three main possibilities on the table:
1. The switch is faulty
2. You have connected your circuit between the two throws
3. Your circuit is non-functonal for whatever reason
The first thing I would do is, as SL4P said, check the pins with a multimeter in continuity mode to figure out the pinout and check if the swhitch is good or faulty.
There should be a combination of two pins that doesn't have continuity in any of the two positions of the switch(since these ate the two throws) and any other combination would have continuity in one of the two positions of the switch.
This will check the veracity of the first two possibilities, and if that's the case, the switch it's not the colprit
I hope I have been helpful :)
--- End quote ---
It was no. 1.
Switch was faulty.
fixit7:
Not sure now.
The switch sometimes works, but most often does not.
Here is where it is used in.
When a laser is shined on the cadmium photocell, the alarm does not sound.
When the beam is interrupted, it sounds.
When I use the larger 3 amp switch, the circuit always works?
Audioguru:
The switch is faulty because its contacts are made for up to 300mA at 125VAC (peak voltages are 177V). But again, your schematic does not show the resistance value of R1 which probably has a current that is 1 millionth what the switch needs and your pin 2 voltage is 60 times too low for that high power switch. Use a switch with gold contacts made for low power.
Is the function of the switch to turn off the beeper when you want after it has been triggered?
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