A D V E R T I S E M E N T
A 100 mA, two terminal regulator is shown in this figure. The circuit has low temperature coefficient and operates down to 3V. Once again, the reverse base current of the LM195 to bias the operating circuitry. A 2N2222 is used to control the voltage across a current sensing resistor, R2 and diode D1, and therefore the current through it. The voltage across the sense network is the Vbe of the 2N2222 plus 1.2V from the LM113. In the sense network R2 sets the current while D1 compensates for the Vbe of the transistor. Resistor R1 sets the current through the LM113 to 0.6 mA.
Source : National Semiconductor Application
A D V E R T I S E M E N T
Posted in 
Posts Related to Two Terminal 100 mA Current Regulator Circuit
High-Efficiency Regulator has Low Drop-Out Voltage Using LM2931CTNational Semiconductor LM2931CT's regulator, the external transistors Q1 and Q2, and a few passive components, this circuit forms a high-low regulator currently has drop-outs. For ...
Regulator Circuit with Multiple Outputs Using LM107The regulator circuit where the output setting resistor is tapped to provide multiple output voltage to op amp buffers. An additional transistor is included as ...
Variable Regulator Circuit Using LM340The circuit is variable regulator series. In the ground terminal regulator is "lifted" by an amount equal to the voltage applied to the non-inverting input ...
Simple Precision Current Source CircuitThe impedance of these current generators is essentially infinite for small currents and they are accurate so long as VIN is much greater than VOS ...
High Current Regulator Circuit Using LM105A circuit for a 10A regulator is shown in this circuit. A third NPN transistor has been included to get higher current. A low frequency ...
