DIYbanter - View Single Post - Repairing Grundig cd-player, transformer identification problem

Jim Poore

wrote:
The mains circuit on the device (before the transformer) has a fuse
that's rated 250V / 80mA.

The circuit I described in my first posting has a three-terminal low
current negative voltage regulator MC79L24ACP. The spec sheet for this
indicates typical output voltage of -24V.

The second transformer output is going throught diode 1N4002GI and a
22kOhm resistor (connected in parallel) to a electrolytic capacitor
rated at 16V.

This might be a n00b question, but is it safe to assume that the
second transformer output is 27V and under 80mA?

The primary current is under 80ma probably close to 20ma if it a
fast-blo fuse up to 40ma if is a slo-blo type. The seconday current
would be higher up to perhaps 500-1000ma

Jim