SLVS074I January 1983 – July 2022 TL494
The 32-V dc power source for this supply uses a 120-V input, 24-V output transformer rated at 75 VA. The 24-V secondary winding feeds a full-wave bridge rectifier, followed by a current-limiting resistor (0.3 Ω) and two filter capacitors (see Figure 10-2).
The 3-A/50-V full-wave bridge rectifier meets these calculated conditions. Figure 10-1 shows the switching and control sections.