Electronic Circuits and Tutorials
Tutorials
Dictionaries
Projects
Facebook
Discover
Home > Electronics Tutorial > Transistor Fault Finding > Collector Load Resistor Open Circuit
Transistor Fault Finding - Electronic Tutorials

Collector Load Resistor Open Circuit Tutorial

Collector Load Resistor Open Circuit

The base is still forward biased, so base current flows.

The base current will be higher than normal, because all the emitter current goes to the base and none to the collector.

Since there is more current through R1, there will be a higher voltage drop across it, and the base voltage will  be lower.

Since the emitter voltage is always about 0.6 volts lower than the base, it will read 0.1 volts.

We would expect the collector voltage to read zero, but we are actually reading the base voltage via the base/collector junction and it will read about 0.6 volts lower than the base.


Note: To report broken links or to submit your projects, tutorials please email to Webmaster