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Top grouping is the left transistor and bottom is the right.
With all that, you can select the right sub Now, if you look at the newly SS transistorthen you’ll notice that it is an exact sub for the 2SC including EBC pin layoutand I would thus very much use that one. There are also BCc but are base centered. Notice the knee in the HFE curves below 2 volts. Makes your life easier as well regarding legs Hfe is not much of issue here as long as it is aboveas this transistor is a “buffer stage” with at max a factor 10 amplification probably less than 5 Higher Hfe can sometimes be desired to “unload” the upfront circuit.
For all other parameters, the KSC is better.
Looking at the zoomed circuit image at the beginning, that’s a Baxandal tone control circuit at 2sc99014 left alright. So I know what I put in. So, what would be the best route to go? I went to digikey and looked for a hFE TO and the only one that popped up was a SS, oddly enough had the code. Yes, my password is: Below is the block diagram for this. Picked up an old GE A a couple datasheet ago.
Oilmaster, I saw that SC you posted.
It’s capacity is also low 2. I only bring this up, as there dwtasheet a Sansui thread where the signal had reduced level on one side, and was cured by changing the c to c The schematic shows it like this with the voltages: The pinout is different from the original to the SS but I could just put some insulators on the legs and make it fit?
Waiting for it to come in the mail and may be a future topic here. First pair of preamp transistors voltages were good but the second pair were way off, right channel one of course. You must log in or sign up to reply here.
I assume its a Hitachi, dwtasheet find anything on the interweb on it. That might very well be critical in this circuit, and therefore also stick with a SS sub. Oh, and I would obviously replace the pair.
I have a bunch of KSC’s kicking around and wondered if they would work just as well? So, this is where I need a little help. Your name or email address: How does RF play into this? Do you already have an account? Like the Tek scope. If you have ksc – it does better in this respect. Did a couple comparison test graphs.
Sounded horrible and right channel weaker than the left. In other words, a higher Hfe means that less current needs to be supplied by the upfront section aka higher Hfe provides higher input impedance The very linear Hfe-Ic curve of the also provides an excellent linearity of the buffer stage which benifits the distortion levels But the KSC should do fine here.
The “6” can refer to even narrower Hfe ranking by the factory. The SS looks good as a replacement.
Didn’t work, had a bad cap and bad transistor. OilmasterNov 24, Below are screen captures of the DCA pro traces. By no means an expert but this don’t look good Cleaned all the pots and switches, still lots of darasheet. Discussion in ‘ Solid State ‘ started by tbone8Nov 23, But if the lower bandwidth would have been acceptable for the circuit, then the equipment manufacturer would have put it! Just remember, the collector and base need to be crossed to match the original configuration.
The right channel was still weaker than the left.
NAD80, I got that scope about 3 years ago locally from craigslist. Recapped the whole thing, sounds much better and a microvolt or two of DC at the speakers. This circuit runs at very low collector voltage.
The transistor in question is an HITC6.
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