Current Mirror Circuit Using Bjt. The simple two transistor implementation of the current mirror is based on the fundamental relationship that two equal size transistors at the same temperature with the same v gs for a mos or v be for a bjt have the same drain or collector current. We neglect the early effect in the analysis and assume the transistors to have identical parameters.
The implementation of the current mirror circuit may seem simple but there is a lot going on. G m i c v t is the transconductance. Bipolar junction transistor or bjt current mirror an often used circuit applying the bipolar junction transistor is the so called current mirror which serves as a simple current regulator supplying nearly constant current to a load over a wide range of load resistances.
Bipolar junction transistors are widely used for current mirroring.
Current mirror circuit using bjt. R e is the. The emitter current in q3 is io α. Current mirror circuit using bjt.
