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I need help with transistors

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Phasor

Member
You could try a 2N7000. Failing that, almost any small n-channel mosfet should work fine, but just check the datasheets first, to compare specs.
 

bogdanfirst

New Member
hm...are you building that lock with the 4022 ?
i build it and it works......but still didn't have time to make the keyboard and really use the lock for something usefull.....
tell me how your project is going.
 

Phasor

Member
In digital electronics, everything is represented by "high" and "low" values. They are comparable to binary "1" and "0". Typically (but not necessarily) 'high' values are represented by a 5V signal, and 'low' values are represented by a 0V signal.
 

Briskability

New Member
If the output goes high when the correct code is entered then why does the led i added to the output stay lit all of the time, did i maybe skrew up?
 
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