Editing Basic Circuit Building Blocks
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*R_LOAD represents the resistance of the load | *R_LOAD represents the resistance of the load | ||
*Q is a npn bipolar transistor | *Q is a npn bipolar transistor | ||
− | *VPLUS_VDD is the power supply for the | + | *VPLUS_VDD is the power supply for the LED |
The current to drive the circuit is approximately the current to drive the load divided by the beta of the transistor. Use a Darlington connected transistor for a very high beta. | The current to drive the circuit is approximately the current to drive the load divided by the beta of the transistor. Use a Darlington connected transistor for a very high beta. | ||
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*[http://en.wikipedia.org/wiki/Common_collector Common collector From Wikipedia, the free encyclopedia] | *[http://en.wikipedia.org/wiki/Common_collector Common collector From Wikipedia, the free encyclopedia] | ||
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== Transistor -- Push Pull Circuit == | == Transistor -- Push Pull Circuit == |