Op Amp Regulator

Posted on Dec 30, 2012

This op amp offers a straightforward method of developing a single-polarity stable voltage source (see the figure). TVansi

Op Amp Regulator
Click here to download the full size of the above Circuit.

stor Ql gets a base drive through resistor Rl, and conducts to develop a voltage (Vi) across the IC"s supply pins. Amp Al, R2, and Ql form a positive-feedback closed loop, along with R3 and the zener diode. Al, R2, and Ql also form a negative-feedback closed loop with R4 and R5. The effect of positive feedback is predominant as the noninverting input receives Vx while the inverting input receives only: This happens until the zener comes into play. When the voltage at the inverting input exceeds the voltage at the noninverting input, Al"s output takes away Ql"s base current through R2, which reduces Vi. Hence, an equilibrium condition is reached. Now: This circuit can source more than 30 mA.

Leave Comment

characters left:

New Circuits



Popular Circuits

VHF preamplifier with BFY91
Differential analog switch
Sound Effects Generator Circuit
Working Principle Television (TV)
20 amp output circuit
LA1800 portable am fm radio circuit design electronic project
LED TesterCircuit
9700s Analog Synth Modules
Automatic multipurpose emergency lights circuit diagram