Please HELP. i test the psu and +rail ok (+16,86) but in minus i have -26,4v. I changed the 7915 and the cap 220uf but the same -26,35. What shal i do?
Seems the regulator isn’t working. Please post a couple well-lit, in-focus photos of the regulators and associated components.
I have changed ALL items of the psu even the transformer. The same! So i give up. No more Whammy for me. Pitty
Finally i put R9,10,13 and R14 and i have +21,21 and -21,23. I omitt leds. Hurray!!!! I dont anderstand , maybe the leds? I’ve chacked everything nothing was short on the board. I am very happy and i thing it is time to continue the assebly. The black pcb is very beautyfull!
I used Green LEDs at 2.1v, supplies are sitting at approx +/- 18.
I will complete the PCB this weekend then wait for the case I ordered to turn up.
I will complete the PCB this weekend then wait for the case I ordered to turn up.
Built my whammy a few weeks ago and I'm really enjoying it. I've added an ODAC into the case and have been streaming from Tidal. Basically, I'm very happy with my first DIYAudio project 🙂
I'm thinking of adding a second headphone jack to allow two listeners. Does anyone have any thoughts on this? I'm planning to use HD6XX and Grading SR325e together. Anything I need to consider?
I'm thinking of adding a second headphone jack to allow two listeners. Does anyone have any thoughts on this? I'm planning to use HD6XX and Grading SR325e together. Anything I need to consider?
Happy Labor Day to everyone here in the U.S..
Is there any advantage/disadvantage to using Schottky 1A diodes in place of the 1N4004 diodes as rectifiers?
I have quite a few of them is why I'm asking.
Thanks.
Is there any advantage/disadvantage to using Schottky 1A diodes in place of the 1N4004 diodes as rectifiers?
I have quite a few of them is why I'm asking.
Thanks.
I used UF (ultra fast) ones. Doubt I could hear a difference but they're only a few cents more 😉
Yes, it was the LED that created this challenge, the circuit will function well without them as well...nJoy
Is it OK to take the o/p from the headphone socket internally to RCA out on the rear panel? I have a larger case that will accomodate them. Or is there a better way to get output via RCA.
I like to buy a second PCB for this. I really like the green boards. Anyone has a green board available?
Thanks
Thanks
Optocoupler
I am returning to this project ( after a really long layoff and just have a few caps and heat sinks to order from Mouser in order to complete the WHAMMY .
Rev. 3 PCB / config. 1 .... I already have the 15V PS
In checking over my mostly stuffed PCB I see that I installed the 4N35 Optocouplers with the lettering in the same direction as the PCB lettering; but the dot on the OC isn't facing the notch. 😱
Thanks for the excellent illustrated guide , it is definitely helpful !
I am returning to this project ( after a really long layoff and just have a few caps and heat sinks to order from Mouser in order to complete the WHAMMY .
Rev. 3 PCB / config. 1 .... I already have the 15V PS
In checking over my mostly stuffed PCB I see that I installed the 4N35 Optocouplers with the lettering in the same direction as the PCB lettering; but the dot on the OC isn't facing the notch. 😱
Thanks for the excellent illustrated guide , it is definitely helpful !