Here you will find simulation files for some of the circuits in the my RSGB book ‘Power Supplies Explained’ as well as others that will accumulate over time. They are in the popular Simetrix format. A free ‘elements’ version of Simetrix is currently available from their website. www.simetrix.com Simetrix says:
“SIMetrix/SIMPLIS Elements is our demonstration free version that can be used without license or copying restrictions, for personal, educational and business use.
Virtually all features of the full version are enabled but we do restrict the size of the circuit that can be simulated. These limits are generous enough for them to be used for real work and we are happy for our users to do so. SIMetrix/SIMPLIS Elements comes with the fully featured schematic editor and waveform viewer found in the full version. SIMetrix/SIMPLIS Elements is available for Windows® systems only”.
I also recommend you look at a web based design tool -
SPICE simulation files are text files. If you click on the Figure links below you will see text. Copy this to a text editor like notepad and save it with a .WXSCH extension. It should then open with SIMETRIX (change 2.1 to .sxgph
Figure 1.3: Simple linear regulator dissipates 11.2W
Figure 2.1: Mains transformer and bridge rectifier
Figure 2.10: Full-
Figure 2.17: Resettable electronic ‘fuse’
Figure 3.1: Simple Zener stabiliser
Figure 3.5: A high power Zener equivalent
Figure 3.6: High power shunt stabiliser with NPN transistor
Figure 3.7: Dual output shunt stabiliser
Figure 3.8: TL-
Figure 3.10: A high power Zener equivalent using a TL-
Figure 3.12: Simple series linear regulator
Figure 3.13: Series Darlington regulator
Figure 3.14: Series regulator with paralleld transistors
Figure 3.15: Series regulator wit constant current limiting
Figure 3.17: Series regulator with foldback current limiting
Figure 3.18: Closed loop linear regulator
Figure 3.20: Series regulator with adjustable output
Figure 3.22: LM317 adjustable regulator
Figure 3.25: General arrrangement of three terminal regulators
Figure 3.26: Increasing output voltage by 0.6V
Figure 3.27: Increasing output voltage with resistors
Figure 3.28: The LM317 adjustable regulator
Figure 3.29: The LM317 as a constant current source
Figure 3.30: A PNP pass transistor increases output current
Figure 3.31: Q2 adds a current limit
Figure 3.32: Low drop regulator with auxiliary supply
For calculation of the ripple voltage and current for rectified and smoothed AC from a 50/60Hz transformer, check out this spreadsheet simulation