A couple resistor and transistor questions

13 May.,2024

 

A couple resistor and transistor questions

Bought a Denon on eBay, looks brand new, major issues on the 5ch amp board.

With the help of the service manual, I've nailed it down to some 22ohm/1W, .47ohm/2W and 3 channels of 2SD2560P/2SB1647P

First, I would like to ask, how important the "P" is on those transistors. The DC current gain is the difference. Encompass seems to be the only way to guarantee the 'P' rank transistors.. Unless that number doesn't mean much.

Also, Encompass seems to be the only company I can find those white/green shielded resistors, I was hoping for ideas that can benefit in a couple ways.. Maybe a different brand would help the wallet AND sound better? $7 per resistor seems a little steep.

I would like to get these parts soon, most of them are on backorder at Encompass... So, any suggestion you have is greatly appreciated

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Buying resistors for Arduino - General Electronics

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Since i started using arduino (''learning'' to be specific), i noticed for every project you need to use resistors (at least in projects when i used LED and potentiometer). Usually Arduino kits comes with 220ohms, 1k,10,12k etc.

So, i was wondering what do you think about what Ohms values of resistors do i need most during simple projects. By simple , i mean you use lot of LED, sensors and stuff that can be found in Starter kits. I wanna stock up some resistors of different values and i need to decide what values do i need most ? I am not going to solder in near future so i would buy 10-20 of most required value just to have it around. When i start to learn how to solder and stuff, i will buy more. Or should i buy every possible value there is, because they are cheap and figure out in future what i need. But there are around 100 values in my shop and buying 20 of each would cost me 30e. I am not kind of person that is willing to take a walk to nearest shop (which is 20 mins by bus) every time when i need something and that thing costs pennies. So what is your experience ?

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