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also need replacement for BS170 and BD679 transistors

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crysrose

New Member
I also need a replacement for BS170 N-Channel, Small signal MOSFET Transistor and a BD679 Darlington, NPN-Power Amp..... which are also parts used in a security door key circuit.... im also requesting for circuits similar to a security door key circuit where all of the components found in the circuit could be found in electronic workbench ver.5 or in multisim... this would be a really really big help for my project! thanx very mch....

PS. thanx bogdanfirst for helping me find a replacement for 4022, hope you could help me again. :D
 

bogdanfirst

New Member
don't know about the BS170. i had to wait for a week to get it.
but about the BD, you can user any type of transistor, NPN wich can handle the current needed by the electromagnet that opens the door.
 
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