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Questions related from Mohamad Sayadi
Dear Reader This unit is about 2500Watt based on half-bridge resonant topology (Ath1). The controller IC is NCP1399AM. SR stage handled by SRK2001. PFC output: about 400volt generated by...
02 July 2020 1,673 0 View
This diode is used in primary winding of a SMPS. Unfortunately, this element failed and only can help to produces a small fraction of full voltage at output (≈10V instead of 24V) and the whole...
14 September 2019 4,388 3 View
The attached picture shows a thermistor with its safety breaker circuit which is common at electrical domestic appliance. I appreciate anyone could help me for finding the curve (temperature vs...
25 August 2019 7,137 6 View
I have recently repaired a Level Limit Switch (Endress+Hauser) that consist of these three main parts (attached picture): 1. Sensor (Diapason) 2. FEM 37 3. FTL325P But I didn’t understand...
01 May 2017 5,871 0 View
There is a switching power supply on the Ferroli boiler (attached pics). The transformer failed to produce appropriate voltage on the secondary sides. I have no idea about the specifications of...
01 January 1970 8,856 6 View
When a transformer has coupling factor less then one and leakage inductance on both sides, what could be the best circuit model that represent all nonideality? The transformer (attached picture)...
01 January 1970 5,870 0 View
Finding the end of resonance in quasi-resonant zero voltage switching inverter (attached figure) I would be grateful if anyone could help me for suggesting a system/or circuit that determines the...
01 January 1970 2,429 1 View
