BAJA Sagittarian Charger (mini KLON) [documentation]
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- Joined: 16 Jan 2015, 11:00
a friend of mine blew up his sagi charger with a 12v adapter. i am going to attempt to fix this for him, but i had a few questions before i fire up my iron
firstly, with this build, a ICL7660S voltage converter was used, and its socketed with tl082 op amps
the zener diode and the 47uf cap attatched to 9v are fried. in fact the cap disintegrated when i pried it away from the vc socket.
is it likely that the chip is toast as well?? it seems to have gotten slightly seared on the side next to that blown cap. how do i test it exactly?
also what other parts would be affected by a blowout such as this?
thanks in advance guys, i am definitely going to try this build when im done fixing my buddy's.
here are some pics
let me know what you think
firstly, with this build, a ICL7660S voltage converter was used, and its socketed with tl082 op amps
the zener diode and the 47uf cap attatched to 9v are fried. in fact the cap disintegrated when i pried it away from the vc socket.
is it likely that the chip is toast as well?? it seems to have gotten slightly seared on the side next to that blown cap. how do i test it exactly?
also what other parts would be affected by a blowout such as this?
thanks in advance guys, i am definitely going to try this build when im done fixing my buddy's.
here are some pics
let me know what you think
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- Posts: 4
- Joined: 16 Jan 2015, 11:00
never mind. i replaced a the 47uf cap and the diode with a 1n4742. this thing is awesome. too bad i have to give it back
but now i get to build my own! parts ordered yesterday, so i will try to keep this thread alive with some build pics!
thanks to everyone in here
but now i get to build my own! parts ordered yesterday, so i will try to keep this thread alive with some build pics!
thanks to everyone in here
- bajaman
- Old Solderhand
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reposting these files because they appear to be missing from page 12 of this thread
bajaman
Moderator: added the schematic so we can have a reference post.
cheersbajaman
Moderator: added the schematic so we can have a reference post.
be kind to all animals - especially human beings
- alexradium
- Resistor Ronker
germanium diodes doesn't matter how you put them once they are in antiparallel,same for 390n and 1k,no matter the position.
you can debate on the positive signs of the zener and 4001,but i did this circuit long time ago,correct at first try,same for the pots,i don't have the original documents but i guess it was specified how to orient diodes the right way
you can debate on the positive signs of the zener and 4001,but i did this circuit long time ago,correct at first try,same for the pots,i don't have the original documents but i guess it was specified how to orient diodes the right way
Really?!? You did a pcb with wrong diode orientation and it worked? Please be honest!
I thought and did the same until a good musician asked me what the matter was..
Well, if the GAIN pot is tied in the wrong way, when it is completely silenced to 0, pedal becomes muddy and does not give a characteristic Klon clean boost.
But, if tied in the right way it behaves identically to the original klon centaur!
So, the correct position means a lot! Friend, the position of these components means much more than whether it is a resistor "metal film" or carbon film!
Obviously you didn't test the pedal when you think it doesn't matter!
Last edited by rtcustom on 17 Jul 2020, 17:17, edited 1 time in total.
- FiveseveN
- Cap Cooler
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First, the layout of the silicon diodes (zener, 1n4001) is wrong, you don't draw graphs about that?!?
Second, the pin layout of the Gain potentiometer is wrong. That doesn't matter to you either?
Third, in my opinion not bad at all if the layout of the components (1k, 390n & 1N34A, ...) is followed as outlined in the schematic diagram, regardless of whether there are differences or not!
Second, the pin layout of the Gain potentiometer is wrong. That doesn't matter to you either?
Third, in my opinion not bad at all if the layout of the components (1k, 390n & 1N34A, ...) is followed as outlined in the schematic diagram, regardless of whether there are differences or not!
Last edited by rtcustom on 18 Jul 2020, 08:36, edited 1 time in total.
By the way, there is no difference if +Vb (4.5V) goes to the junction between P3A & 1k than to the 390n than to the P1A
and vice versa (+Vb goes to the junction between P3A & 390n than to the 1K than to the P1A)?!?
and vice versa (+Vb goes to the junction between P3A & 390n than to the 1K than to the P1A)?!?
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- FiveseveN
- Cap Cooler
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No, there isn't. Do you want proof? Are you familiar with circuit simulation?
I never said anything about pots or the power supply.That doesn't matter to you either?
What do you think is more likely?
A. That you've made some erroneous assumptions
B. That Gustav Kirchhoff was wrong
Ignorance more frequently begets confidence than does knowledge. (Charles Darwin)
- bajaman
- Old Solderhand
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yes
be kind to all animals - especially human beings