high-power op-amp supply - + and -15 volts at 2 amps

and —15 volts at 2 amps There is often a need for a high- power no-nonsense supply for a cir- cuit with a large number of op-amps and other (linear) ICs. A variable supply with current limiting and other special functions would in- crease the price and complexity un- necessarily for most applications. What is needed in many cases is a straightforward design that does what is demanded: supply-power. No more and no less. TheLM325voltageregulatorthat forms the heart of this circuit is unusual in that it provides sym- metrical output voltages of + and —15 V. This is made possible by the inclusion of both a positive and a negative regulator in the same chip. In normal operation the B (boost), Rcl (Rcurrent limit) and sense pins for both positive and negative regulators are connected together. The current is then internally limited to 100 mA, which is far from the high power we had in mind. All is not lost yet, however, as two external transistors can be driven by the B outputs and ...