Safety analysis of 2-pin capacitor as 4-pin capacitor with frequency response
Keywords:fail-safe, 4-pin capacitor, open fault, parallel coupled line
This paper presents an experiment to verify the safety effect of resolving an open capacitor failure by 4-pin capacitor structures or 2-pin capacitor structures by cut the copper pattern of the printed circuit board (PCB). Both solutions to the problem of open capacitor failure do not affect the next part of the circuit or devices in the operating frequency range of 100 kHz to 500 kHz. This research analyses the effect of using a 2-pin capacitor by cutoff the printed circuit board. The results of parallel patterns of copper stripes were analyzed at different stages and frequency responses analysis in the range of 100 kHz to 4.50 GHz based on a frequency response analysis (FRA), which are experimental results of insertion loss (S21) and return loss (S11). Using a conventional capacitor instead of a 4-pin capacitor of RT2010 type did not show any harmful effects from self-oscillation within the circuit or from the external circuit. The accuracy was verified by simulating the computer program and measuring the test circuit.
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