The photodiode (glued over a red indicator LED) outputs 1 micro A &
4.8 mV when the indicator LED is activated. A 2nd. red LED needs to duplicate the indicator LED' action. Need a circuit to drive the 2nd. LED.
Supply 12V, 471 op, 2N2222 and 2N3819 Fet handy any thing is good.
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photodiode boost
Moderator: pebe
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photodiode boost
by jack mcleod » Tue Apr 12, 2011 4:29 am
- jack mcleod
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- Joined: Mon Feb 18, 2008 7:46 pm
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