In this circuit, a PNP transistor sources current. The base voltage is about 0.7 V less than the emitter voltage. So with 10.3 V on the base, the emitter has about 11 V and R1 sees about 1 V ...

Figure 1 A series of LM317 circuits investigated in simulation and on the test bench for suitability as a current source. The circuit’s broadband PSRR was simulated, measured in ohms, and defined as ...

For more practical circuits, build the current mirror with 2 resistors, an opamp (to compare voltages over those resistors) and a MOSfet on the output of the opamp. This has: – better accuracy.

The compliance range for operating voltage extends from a minimum of 4 V (both circuits) to a maximum that is slightly lower for the Figure 1a circuit (90 V), because of its different output device.

The film explains how electric current is generated at power plants and delivered to homes through wires. It describes the concept of electric circuits, including closed and open circuits, and the ...

Here, i N = i SC because source current is diverted through the short circuit load. To find the equivalent resistance R N , remove all power sources and calculate total resistance at the load.

If used in oscillator or function generator circuits, an ultra wide range VCO can be made. Also, in power supply circuitry, it is possible for a reguator to have as much resolution when adjusted for 0 ...

A monolithic current source uses two external resistors to program its output from 0.5 mA to 200 mA with 1% initial accuracy and a low temperature coefficient.

2. Three approaches to a JFET current source: The simple circuit, with a source resistor chosen to reduce the temperature coefficient of the circuit (a); a cascode circuit that gives tighter ...

If they suspect that their residual current circuit breaker is faulty, they should engage a licensed electrical worker to conduct further checks, and have it replaced, said the authorities.