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A single device with this type of holdoff is really expensive, so I’m looking for an alternative solution. Dataeheet at this AP-note http: We can see that D1 with the lowest leakage will have more than its rated V over it. Sign in Already have an account?

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 dattasheet and try to get you a more definitive answer. Already have an account? This will cause voltage breakdown of D1, followed by breakdown of D2. Posted June 3, You need to be a member in order to leave a comment.


Share this post Link to post Share on other sites. Hey guys, I’m a new member to this forum, so I have no idea if this topic has arisen before.

2N_PDF Datasheet Download IC-ON-LINE

Posted June 6, Power Electronics Search In. 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.

Sign up for a new account in our community. Posted June 4, We want dxtasheet use it in a V application. I have a project coming up where I need to hold off about volts using an SCR. In the diagram I used a leakage for 10uA for the one and about 20uA for the other.

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

We connect it as shown in the first datsheet, but find that the load turns on when we connect the power, even with no trigger applied. If we take 3mA 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.


From what I have seen they use pulse transformers to trig from a lower voltage to achieve simultaneous response. The problem is the leakage current that may vary from 10uA at a cold junction temperature to 2mA for a hot junction.

Sign In Sign Up. Register a new account. Let’s look at a typical hookup using two 2N’s in series.


PDF This gives you the basic idea, but there are other problem issues not mentioned here. By stanyJune 3, in Power Electronics. Years ago, I read or heard of someone putting two SCR’s in series to achieve higher voltage rating. Also note that we will be generating a fair amount of heat datashert the balancing resistors datahseet shown on the wattmeter.

We need to create a additional leakage path greater that the worst leakage spec in order to balance the voltages. Anyone out there with any experience in this application???