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Message History

I have used PDS3200 diode has maximum reverse voltage rating of 200V. sometimes due to external circuit at cathode of diode there could be 250V spike for less than few ns. This is due oscillation in other circuit. will this cause damage to my diode ? How much energy is required for permanent damage to diode. Is there any way to calculate it ? I want to make sure my diode should ...


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If you’ve ever had a PCB design that looked perfect in CAD but ran into issues during fabrication or assembly, you already understand why Design for Manufacturability (DFM) matters. Most production problems don’t come from complex designs, they come from small, overlooked basics like pad and hole mismatches, overly tight trace spacing, weak thermal relief, poor component placeme...


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Hi! I was asked at RF Course to design a Current Starved VCO with 4GHz. While looking at papers I noticed most used 2GHz or 1GHz (and between). So for me, I designed first with 5 grades, Then saw I can't reach 4GHz, so removed to 3 grades. Now, the problem is, I can't reach 4GHz on linear part (We need the linear to calculate the fout which depends of Kvco and F). The best I man...


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I am using AD5941 in one of my projects. The maximum SPI CLK frequency is 16 MHz (page no: 104). The SPI timing specifications is given below (page no: 17). The minimum SCLK high time and SCLK low time is ...


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CST Step Response

Hi, I am trying to obtain a transmitted step response from a simple circuit in CST. I have not been able to find instructions online, and when I create a transient function and define an excitation for port 1, there is no step-response option or anything similar. Would appreciate the help. The circuit is a two-port network in which Port 1 and Port 2 are connected by a single tra...


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