ajcc
Experienced Member
Hi guys!
Been quite a while since I wrote anything on the forums, but today I found a Spectravideo SV-328 as the topic suggests. Sadly they didn't have a wallwart for it and the required 9VAC @ 1.5A and 16VAC @ 0.8A isn't something I have at home. So I thought it must be regulating that power inside and sure enough, 78-series linear regulators inside... I guess it's important to keep the Z80 warm and comfy.
Anyway, there's seemingly no easy way to access the rails to feed them with regulated power. So I'm a bit stuck in my attempts to test the SV-328. I could feed the +12 and -12 rails by hooking on alligator clips on the regulators but they are in bad spots and the required power doesn't allow for tiny hooks. So maybe I have unsolder the regulators to get some proper attachment points, but I'm not sure. The 12V rails are using a mains full wave bridge rectifier so I can't just feed it straight DC via the connector.
Been quite a while since I wrote anything on the forums, but today I found a Spectravideo SV-328 as the topic suggests. Sadly they didn't have a wallwart for it and the required 9VAC @ 1.5A and 16VAC @ 0.8A isn't something I have at home. So I thought it must be regulating that power inside and sure enough, 78-series linear regulators inside... I guess it's important to keep the Z80 warm and comfy.
Anyway, there's seemingly no easy way to access the rails to feed them with regulated power. So I'm a bit stuck in my attempts to test the SV-328. I could feed the +12 and -12 rails by hooking on alligator clips on the regulators but they are in bad spots and the required power doesn't allow for tiny hooks. So maybe I have unsolder the regulators to get some proper attachment points, but I'm not sure. The 12V rails are using a mains full wave bridge rectifier so I can't just feed it straight DC via the connector.