wharris wrote:
Josh, you were kind enough to answer my question about the T-Rex Viper pedal the other day. Not to beat a dead horse, but I just want to make sure I am thinking everything through (long time since my EE courses). If the Viper lists a current draw of 162mA @ 12V then the R of it's circuit is 0.074Ω. I understand that the output of 5 and 6 is unregulated, but the pedal itself will dictate that the output voltage to it (Viper) is 12V, right? I just don't want to damage the pedal circuit or not get the full effect. Thanks for your patience, and for being so available.
A very long time... you're off by a factor of 1,000 and I'm not sure what you want to do with an equivalent resistive load value, aside from the fact that it is unlikely the pedal behaves anything like a resistive load. You can anticipate somewhere around 12.5V at 162mA. Since it is unregulated, you can also expect the actual output voltage to vary a little depending on your AC line voltage and what other loads are connected. It should be fine, please post your results!
Regards,
Josh Fiden
Founder / CEO