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#1
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One shot
What't the difference between a retriggerable one shot and a regular
relay? Isn't that the same thing? -- Broderick Crawford Highway Patrol |
#2
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One shot
On Sat, 28 Jul 2007 21:08:09 -0400, Broderick Crawford wrote:
What't the difference between a retriggerable one shot and a regular relay? Isn't that the same thing? The basic one-shot will ignore a trigger pulse that arrives during its 'on' period. A retriggerable one-shot will stay 'on' for as long as triggers arrive before the circuit reverts to the 'off' state. One of the uses of the retriggerable version is as a watchdog timer, to raise an alarm if an expected event doesn't happen on time. |
#3
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One shot
On Jul 29, 7:26 pm, "Stephen J. Rush" wrote:
On Sat, 28 Jul 2007 21:08:09 -0400, Broderick Crawford wrote: What't the difference between a retriggerable one shot and a regular relay? Isn't that the same thing? The basic one-shot will ignore a trigger pulse that arrives during its 'on' period. A retriggerable one-shot will stay 'on' for as long as triggers arrive before the circuit reverts to the 'off' state. One of the uses of the retriggerable version is as a watchdog timer, to raise an alarm if an expected event doesn't happen on time. Hi This sounds like exactly the thing I need. I read up on relays on internet but still I dont' find any that has an 'ON period'. Can you explain more or tell me how to search for them. What I want to do is as following. I want a small voltage (A) to trigger an event (B). The B process must run for longer than the A signal. E.g you briefly press a button and a motor starts turning. Once a complete revolution is done, it stops and you can press the button again to start the process. |
#4
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One shot
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#5
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One shot
Hi
Yes please draw away. I finally found the LATCH keyword on wikipedia (should have started my search there). Won't a normal latch relay to it. Input button to start it, and then use the motor to physically trigger the reset when one revolution is completed. |
#6
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One shot
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