Archive for November, 2011

hp 6632A System DC Power Supply

Tuesday, November 15th, 2011

This is a very old machine used for automatic tester with HPIB control capability.  There is some very good old transistors as shown.  The transformer is still EI type and thus the set very heavy even the size is not big!  The bad thing about this supply is too noisy for lab use due to fan noise.  But it is a very low noise and high speed power supply from 0 to 20V and 5A maximum.  If you want to change the input AC voltage, you have to open the set and select by two switches near the IEC socket.

hp 3324A function generator photos

Monday, November 14th, 2011

I acquired this function generator in Oct 2011 and here is some internal photos to share.  My set is with the internal 10Mhz reference oscillator option.