> -----Original Message----- > From: cctalk <[email protected]> On Behalf Of Jay Jaeger via > cctalk > Sent: 05 December 2021 14:51 > To: [email protected] > Subject: Re: PDP-11/70 Boards > > On 12/5/2021 3:37 AM, Rob Jarratt via cctalk wrote: > > > Thanks for the tips. The transformer that drives the bricks is a real beast. > Did you find an alternative more convenient way to power them on the > bench? > > > > From the schematics, some of them seem to want 20-30 VAC (some, like at > least one of the -15v regulators, take DC inputs from other regulators) > > For lower current initial testing I have some 24v 2A transformers lying > around. For higher current, I might use something like this guy: > > https://www.digikey.com/en/products/detail/triad-magnetics/F- > 401U/5032226
I have a variac rated at 2.5A. I am not quite sure whether that would be sufficient to test the bricks individually. Otherwise, I guess one of these would do the trick https://cpc.farnell.com/block/steu250-48/transformer-250va-230-400v-2-x/dp/TF01418?st=24v%20transformer ? > > JRJ
