Well, I have this small project on a PCB and I'm using SMD components. I'm concerned about a relatively-high voltage part of it.
My question is whether this digital switching circuit will work or not.
I need to switch a bright 28v DC lamp, which I had for quite some time and decided to put for a good use, using low voltage. I tested this circuit with larger components on a matrix board which worked great, but I'm concerned about the SMD versions.
Datasheets:
http://www.fairchildsemi.com/ds/PN/PN2222A.pdf (MMBT2222A)
http://www.st.com/stonline/books/pdf/docs/2156.pdf (LM124D)
Circuit
http://i34.tinypic.com/307onqq.png
My other choice for a transistor is a BS170F MOSFET. Also SOT-23 package.
My question is whether this digital switching circuit will work or not.
I need to switch a bright 28v DC lamp, which I had for quite some time and decided to put for a good use, using low voltage. I tested this circuit with larger components on a matrix board which worked great, but I'm concerned about the SMD versions.
Datasheets:
http://www.fairchildsemi.com/ds/PN/PN2222A.pdf (MMBT2222A)
http://www.st.com/stonline/books/pdf/docs/2156.pdf (LM124D)
Circuit
http://i34.tinypic.com/307onqq.png
My other choice for a transistor is a BS170F MOSFET. Also SOT-23 package.
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