9 hours ago, Altitude said:
Maybe 1 millivolt is embellishing it a bit but its pretty close
ok
Best
Zam
Hello, altitude, i am on the way to add leds to my gate outputs.
Are you using BC547 as transistor ?
i try to understand how it works, i checked shematics of the midi2CV of hexinverter, some yusynths pcbs, and yours , you all use a transistor, but no one use the same way to accomplish this (maybe it is the basics, sorry if it is THE noob question).
7 hours ago, Lamouette said:
Hello, altitude, i am on the way to add leds to my gate outputs.
Are you using BC547 as transistor ?
i try to understand how it works, i checked shematics of the midi2CV of hexinverter, some yusynths pcbs, and yours , you all use a transistor, but no one use the same way to accomplish this (maybe it is the basics, sorry if it is THE noob question).
Simplest way for you is to use a separate DOUT pin, which Iâm sure can be assigned in the hardware config.
The reason for using a transistor (or CMOS pin as I have) is to provide extra current for the LED, so it doesnât load down the gate when used in parallel.
I already did the front panel, and donât want to add a specific DOUT only for this.
I will use Altitude value and check what happens !
Donât want to hijack the thread, but i tried the schema, with the good value for my leds, but impossible to get it working.
i have 4.8V at the gate output, and used 470R resistor for my led.
The datasheet for the BC547 say : Emitter-Base Voltage 6V, is my gate voltage to low to open it ?
I used a 3904 for my design, maybe thatâs the difference. The circuit works fine in the module..
Did you wire the transistor properly? The 547 and 3904 have opposite pinouts. You can also bias the transistor to get it triggering at different levels.
This blind troubleshooting in an unrelated thread is a bit perplexing. Why not start a new thread and, post pictures/schem of what youâre trying to achieve.