Anyone built the power supply from "electricity & electronics" by randy slone?
I just completed construction of this power supply and made the modifications on page 333 using the IC voltage regulators (nte956 and nte957). My input voltage is about 36v however the output voltage from the IC is about 28v.
The previous circuit that did not use the IC's gave a variable output of about +- 3.8 to 36 volts DC. Now I'm getting about +- 1.2 to 28. I'm wondering that if incorporating the IC's to improve the voltage regulation under load is the cause of this? Is this the expected outcome?
Here is a diagram of the positive side of the regulated power supply.36V raw +dc__________________NTE956__________________________________Regulated V Pos. | | | | | | | | + |_____220 ohm 2W 10uF 35VDC 4700uF 50W | | - 5Kohm 2W potentiometer 10uF 35VDC | | | | | | Circuit Common Circuit Common Circuit Common