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Register a new account. Anyone out there with any experience in this application??? We connect it as shown in the first diagram, but find that datasheft load turns on when we connect the power, even with no trigger applied.

Look at this AP-note http: We need to create a additional leakage path greater that the worst leakage spec in order to balance the voltages. By stanyJune 3, in Power Electronics.

In the diagram I used a leakage for 10uA for the one and about 20uA for the other. The problem is the leakage current that may vary from 10uA at a dataheet junction temperature to 2mA for a hot junction. Sign In Sign Up.


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Hey guys, I’m a new member to this forum, so I have no idea if this topic has arisen before. If we take datasyeet to be very safe, the voltages balance out but we have to live with the high leakage current through the load, which may be a problem for the application.

Already have an account? We can see that D1 with the lowest leakage will have more than its rated V over it. Posted June 4, A single device with this type of holdoff is really expensive, so I’m looking for an alternative solution.

Also note that we will be generating a fair amount of heat in the balancing resistors as shown on the wattmeter. Power Electronics Search In.

2N4444 View Datasheet(PDF) – Motorola => Freescale

From what I have seen they use pulse transformers to trig from a lower voltage to achieve simultaneous response. Share this post Link to post Share on other sites. We want to use it in a V application. This will cause voltage breakdown of D1, followed by breakdown of D2.

Posted June 3, datasehet Years ago, I read or heard of someone putting two SCR’s in series to achieve higher voltage rating. I have a project coming up where I need to hold off about volts using an SCR.


Off my head, I cant just ramble out the way it works, but I’ll look through the schematics and the theory book tommorow at work and try to get you a more definitive answer. Sign in Already have an account? Create an account or sign in to comment You need to be a member in order to leave a comment Create an account Sign up for a new account in our community.

Motorola 2N Series Datasheets. 2N, 2N, 2N, 2N Datasheet.

You need to be a member in order to leave a comment. Sign up for a new account in our community. Posted June 6, PDF This gives you the basic idea, but there are other problem dagasheet not mentioned here. Let’s look at a typical hookup using two 2N’s in series.