Electro nS
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i want to open close an EM brake .
details : EM brake continous current 0.5A , i donot know the peak but the spark is high when it is disconneted
i am using a pic and transistor with flyback diode across the inductive load (brake) , the operation is not perfect and i am not happy with the results maybe because the pic is not able to supply the required base current (around 20mA-50mA) very well ... donot know ?
i have check some similar systems , they use a relay , but why ? is it better ? what if i decided to use relay instead of transistor (although i will have to use a small transistor to drive the relay) , does it cause problems in the PCB ? noise , arcing ?!!! suggestions ?
details : EM brake continous current 0.5A , i donot know the peak but the spark is high when it is disconneted
i am using a pic and transistor with flyback diode across the inductive load (brake) , the operation is not perfect and i am not happy with the results maybe because the pic is not able to supply the required base current (around 20mA-50mA) very well ... donot know ?
i have check some similar systems , they use a relay , but why ? is it better ? what if i decided to use relay instead of transistor (although i will have to use a small transistor to drive the relay) , does it cause problems in the PCB ? noise , arcing ?!!! suggestions ?