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04/20/10 08:05
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#175154 - solenoid driver
I am trying to switch ON and OFF a solenoid vlave operating at 24 v 0.5 A using a digital signal from a microprocessor

My digital signal supply is only in TTL level (ie in micro amps range).But my valve needs 0.5A 24 V current.

I also wanted to switch on and off at high speed using the digital signal.

So I decided to put a relay in-between the signal and valve and connect the power supply to the relay .
and expected the relay to be actuated by the signal form signal generator.

But the relays which I found also require about 10 mA current at 5V which is not possible by the 5V TTL signal.

So I am now looking for means to actuate my valve at 24 V ,0.5 A using a TTL signal when ever the TTL signal goes on the input to the valve is 24V whenever the TTL signal goes low the input to the valve goes to zero.

Any suggestions on how this problem can be solved?


List of 17 messages in thread
TopicAuthorDate
solenoid driver            01/01/70 00:00      
   switch on and off at high speed            01/01/70 00:00      
      speed range            01/01/70 00:00      
   the typical circuit            01/01/70 00:00      
      clarification            01/01/70 00:00      
         "ASCII schematic"            01/01/70 00:00      
            ASCII schematic is useful!!!            01/01/70 00:00      
               answers            01/01/70 00:00      
   It's in the FAQ            01/01/70 00:00      
      Thanks for the reference            01/01/70 00:00      
   Have you considered a "solenoid driver"?            01/01/70 00:00      
      Ready made solenoid drivers            01/01/70 00:00      
         recognized my error            01/01/70 00:00      
         This is not rocket-science            01/01/70 00:00      
            Check the data sheet you linked...            01/01/70 00:00      
               Yes, people do have to read the datasheet            01/01/70 00:00      
   re: solenoid driver            01/01/70 00:00      

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