An 18 V, 1 A, PWM-programmed grounded load negative current source with a novel LM337 topology. With this topology, accuracy is insensitive to supply rail tolerance. The asterisked resistors are 1% or better and RS = 1.25 Ω
Figure 3. An 18 V, 1 A, PWM-programmed grounded load negative current source with a novel LM337 topology. With this topology, accuracy is insensitive to supply rail tolerance. The asterisked resistors are 1% or better and RS = 1.25 Ω