Hi, We have a requirement to perform 20g 100ms half-sine shocks on a new product we are developing. The shock requirement comes I believe from a helicopter specification. We have scoured our usual environmental test facilities but the duration is too long for them due to the high displacement...
I have a problem with an SSR when driving a three phase fan at 115V, 400Hz, max 440Hz. The powerfactor is not very high typically 0.3 . The problem is that occasionally two of the three SSR's feeding the fan do not switch off when commanded to do so via the inbuilt opto. The problem is worse as...
Can anyone recommend a potting compound for an electronic circuit card that could withstand JP10 fuel vapour for 30 days without significant swelling or degradation ?
Thanks
Nick Stilwell
