I'd like to design a circuit that can detect when the wrong transistor type is placed. Q1 should be a NPN and Q2 should be a PNP. Both have there own LED that will light up when the correct Transisor type is in place.
When either or both transistors are swapped for the wrong type (Q1 swapped for a PNP or Q2 swapped for a NPN) it's LED should be "off".
Also I need to measure a single output that will be at 5V or less if one of the transisor types is wrong, and at around 16v if they are both the correct type.
I've made a circuit using a 2n6488 (NPN) and 2n6491 (PNP) I thought would work buttt.... it doesn't. Am I biasing the transisors wrong? Is there a better way to do this?
When either or both transistors are swapped for the wrong type (Q1 swapped for a PNP or Q2 swapped for a NPN) it's LED should be "off".
Also I need to measure a single output that will be at 5V or less if one of the transisor types is wrong, and at around 16v if they are both the correct type.
I've made a circuit using a 2n6488 (NPN) and 2n6491 (PNP) I thought would work buttt.... it doesn't. Am I biasing the transisors wrong? Is there a better way to do this?
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