Power Supply Module Tested
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Power Supply Module Tested
Car batteries need to be repeatedly disconnected and reconnected, e.g. during service or repair. This involves the risk of connecting the battery with reversed polarity, which may lead to damage in the components and circuitry connected. Therefore, as part of the qualification test, every electronic circuit must pass a reverse voltage test. An electronic module like an ECU or a lighting control unit must be connected to a negative voltage for a time of at least 60 s. After the test, the module must not show any damage due to the applied reverse voltage. The test requires a power supply that can operate in quadrants I and III to supply the electronic module with power and to apply a negative voltage and current. Furthermore, suitable pass/fail criteria are needed to validate the electronic module.
A good approach is to accurately measure the supply voltage and current to determine if the electronic circuit is still undamaged after the negative voltage has been removed. Measuring the voltage and current with high precision before, during and after the test is a very simple way to detect a malfunction of, or damage to, an electronic circuit. Complex functional testing of the electronic module is not necessary. Furthermore, the application should be capable of automated testing especially when used in production environments.
The R&SNGU401 source measure unit is ideal to perform standard compliant reverse voltage tests since it can operate in quadrants I and III. It can power the electronic module during normal operation, apply a negative voltage and current for at least 60 s, and return to normal operation when positive voltage is back. The test sequence can be defined e.g. by using the internal arbitrary generator, or programmed externally and applied via remote control.
Eaton Cutler Hammer PRTAAPM Auxiliary Power Module is an auxiliary power supply module for Digitrip Trip Units when testing Digitrip Trip Units, either an auxiliary power supply module will be required, or the power/relay module must be energized through its breaker secondary terminals. Used in conjunction with the Eaton Cutler Hammer 140D481G03 Secondary Injection Test Set
With a Power Analysis Application Module installed on an oscilloscope, an embedded designer who rarely deals with power measurements can quickly get the same accurate, repeatable results as a power supply expert.
With the DPO4PWR Power Analysis Application Module installed on an MDO4000 Series oscilloscope, or an MDO3PWR Power Analysis Application Module installed on an MDO3000 Series oscilloscope, an embedded designer who rarely deals with power measurements can quickly get the same accurate, repeatable results as a power supply expert. A Power Analysis Application Module with an oscilloscope and differential voltage and current probes form a complete measurement system for power supply design and test.
The ultimate goal of a DC-output power supply is to transform input power into one or more DC-output voltages. Especially for switching power supplies, the output measurements are essential. These measurements include line ripple, switching ripple, and modulation analysis.
The quality of a power supply's DC output should be clean with minimal noise and ripple. Line ripple measures the amount of AC-output signal related to the input line frequency. Switching ripple measures the amount of AC signal related to the switching frequency.
The DPS5020 is a constant voltage/current programmable control power supply module, that integrates analog and digital control in one device. Th e module is a 0-50V/0-20A Lab PSU module that comes in 2 parts, the main controller and a front panel. The main board has connections for input/output voltage as well as connection headers for Bluetooth and USB to Serial converter.
The front panel module has buttons and a control knob to set the desired voltage/current and an OLED display to show actual readings and set points. The DPS50