slow switching relay
slow switching relay
(OP)
I am setting up a circuit where I need to have a timer drop out when a relay switches. Is there a relay I can use that will have a deadband time of approx .5 sec?
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RE: slow switching relay
RE: slow switching relay
in series.
<nbucska@pcperipherals.com>
RE: slow switching relay
RE: slow switching relay
RE: slow switching relay
The pull-in voltage of a relay is not well defined - it changes from unit to unit etc.
What are you trying to do ?
<nbucska@pcperipherals.com>
RE: slow switching relay
RE: slow switching relay
RE: slow switching relay
If this is correct, you just need to control the relay from a one-shot. You will need a relay to provide the power to the cooling unit. You will need a one-shot such as the LM555 to provide the timing. You will need a power supply of 5-15 volts.
You will need a reverse diode across the relay coil. (1N4002). You will need a transistor from the output of the LM555 to use for turning on the relay. You will need a decoupling capacitor, an input noise resistor-capacitor, and a timing resistor-capacitor.
Search application notes for the LM555, MC1455, UA555, LMC555, and I think you will find a suitable application note.
RE: slow switching relay
Melone is correct. You can use a programmable relay. SSAC makes one that can be configured as a 1-shot. Is is rated to run off of 24 to 120 Volts ac/dc.