As everyone who’s tried to buy one knows, power transformers for tube projects can be expensive. Even small transformers for small projects. But today I stumbled on a great deal for a small preamp power transformer made by Hammond.
Most people know about Hammond’s 2xx/3xx vacuum tube power transformers. However, less well know is their 6Kxx series which they sell through through major electronics distributers. These are similar to some of the more common series but with better prices and availability.
So today I stumbled on to the 6K88VG by Hammond. The one I found was sold through Allied Electronics. Here’s the part link: https://www.alliedelec.com/product/hammond-manufacturing/6k88vg/70009014/. As of this writing they are priced at $26.51 USD each. I just bought a couple for my parts stash and with tax and shipping (which currently is substantial) they were still just a little over $38 USD each delivered to my door. My shipping was $18 USD but if I’d ordered 4 it would only have been $21 USD. So bulk orders do make it an even better deal.
This has a 500VCT@40mA secondary for B+ and a 6.3V@2A secondary for tube filaments. This is a great little transformer for stereo preamps and related projects. Used with a 6CA4 rectifier this will give a B+ between 250Vdc and 300Vdc and after subtracting the rectifier filament current (i.e. 1A) still leaves enough filament current for three 12Axx7 tubes (300mA each). There are a lot of possible projects for which one could used these transformers.
I just thought I’d let builders know these transformers are available.