8 Apr
2012
8 Apr
'12
10:16 a.m.
On Apr 8, 2012, at 12:44 PM, Rob Jarratt wrote:
I have breadboarded the circuit above and tested the 4
Darlington
Transistors. The one that was showing slightly different values to the rest
with my diode test turned out to switch on the bulb regardless of whether
the resistor was there or not. The others worked as they should. So I will
now look to source a replacement.
Ah, yes, easily sourced from Farnell. Should have looked before I sent
the previous email, but I was on my phone:
http://uk.farnell.com/stmicroelectronics/tip125/darlington-transistor-to-22…
- Dave