Chapter 3 Front-Panel Operation and Features
Programming Overvoltage Protection
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Note The power supply’s OVP circuit contains a crowbar SCR, which effectively shorts the
output of the power supply whenever the overvoltage condition occurs. If external
voltage source such as a battery is connected across the output, and the overvoltage
condition inadvertently occurs, the SCR will continuously sink a large current from
the source; possibly damaging the power supply. To avoid this a diode must be
connected in series with the output as shown in Figure 3-1.
Figure 3-1. Recommended Protection Circuit for Battery Charging
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