So I built a different circuit that works but when I turn it to max volume it start pulsing DC and burning my tiny test speaker. What could be the problem here? Also the PSU is rated 0.5amps for the -12v rail but it’s a cheap one so I bet it is only like .3amps. And I don’t think it’s clickbait because it IS what I’m asking: would this work. More clickbait title would be; PLZ HELP FAST NEED HELP NOW!!!!!
So I built a different circuit that works but when I turn it to max volume it start pulsing DC and burning my tiny test speaker. What could be the problem here? Also the PSU is rated 0.5amps for the -12v rail but it’s a cheap one so I bet it is only like .3amps. And I don’t think it’s clickbait because it IS what I’m asking: would this work. More clickbait title would be; PLZ HELP FAST NEED HELP NOW!!!!!
No, that is a simple single supply pre-amp with AC coupled input and output.
The supply voltage markings are deceptive, it only requires a single +6V supply. The line marked 6V- is ground, both for the supply and for the input and output.
It was almost certainly intended to be battery powered (possibly explaining the markings as in '6V battery +ve and -ve terminals').
P.S. Can you please edit the thread title in your OP to be less clickbait - Something like Transistor preamplifier supply, that might help others in the future.
Thanks for the help... not! That means that it’s the forum fault. So I need to like imagine what could your brain would process normally as a title and wouldn’t click it in to ‘cocky’ mode!
And ok that would mean that other forums are better, so I’ll try asking it somewhere else where not as much people are such d** about your creativity
So I built a different circuit that works but when I turn it to max volume it start pulsing DC and burning my tiny test speaker.
Thanks for the help... not! That means that it’s the forum fault. So I need to like imagine what could your brain would process normally as a title and wouldn’t click it in to ‘cocky’ mode!
And ok that would mean that other forums are better, so I’ll try asking it somewhere else where not as much people are such d** about your creativity
Before yes! I got great help but you just ‘helped’ me whit the title. And did I need to title this post as ‘would this unidentified circuit I found on google while looking for something else work?’ If so
The supply voltage markings are deceptive, it only requires a single +6V supply. The line marked 6V- is ground, both for the supply and for the input and output.
Thanks for the help... not! That means that it’s the forum fault. So I need to like imagine what could your brain would process normally as a title and wouldn’t click it in to ‘cocky’ mode!
That being said, I'm not experienced and don't know how Gyro and Soldar got to know that -6V is actually just ground. But I would believe that the schematics are right, so the potential difference there is 12V... As you do want to use a 12V power supply, I would test the circuit with +12V in the +6V line and ground to the -6V line. I would also try what Gyro and Soldar said about just using ground to the -6V line and see if it works out.
I have figured out the preamp now there is a problem whit the coupling cap, my amp has a 50k pot on the input put volume and it whit the coupling cap from the circuit created a high pass filter. and if I put a 1uF electrolitic it starts conducting dc for some reason. also when I don't put another coupling cap at the end of the circuit it also conducts DC for some reason
What could be the problem? (Attachment Link)
NOTE: I know it's an overdrive circuit but it doubles as a preamp when I turn it down.
I have figured out the preamp now there is a problem whit the coupling cap, my amp has a 50k pot on the input put volume and it whit the coupling cap from the circuit created a high pass filter. and if I put a 1uF electrolitic it starts conducting dc for some reason. also when I don't put another coupling cap at the end of the circuit it also conducts DC for some reason
What could be the problem? (Attachment Link)
NOTE: I know it's an overdrive circuit but it doubles as a preamp when I turn it down.when I put like a 47nF cap for DC coupling at the circuit it doesn't pass DC trough!