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A SMD Dynalo. It is a modular double monophonic one, comprises four small PCBs: two for audio and two for the corresponding power supply.
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I had the incident yesterday. The Banned Screen appears before to have the chance to introduce the data to login, I had a previous one in a different place, connected to a different net. So, it appears to be random and not related to the person or the point of connection.
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Continuation of R2R DAC Discussion From Stax Thread
Remolon replied to Sechtdamon's topic in Home Source Components
Not exactly. Suppose we need 100R. Paralleling two 200R: 200R + .5% = 201, in parallel 100.5R, exactly 100R + .5%, Although with less probability of the maximum error. -
why not, if the TO126 body is non conducting pastic?
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would be a significative difference in heat transfer turning upside down the BJT and using the other face for cooling?
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I think that 2 mm paths for the output transistors and 1 oz. copper is more than enough for the current handled by the Dynalo.
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This is the Dynalo PCB I am using. I ordered them from Elecrow. They are 94mmx74mm, 2 layer,1 oz. copper and 1,6mm thick. The price for 10 is 14USD plus shipping, and the quality is good enough.
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Just permuting 500R and 1K the maximum Iccs does not change and the minimum is lower. For a LED with Vf=1.8V: Imax= 3.6mA and the minimum of 2.52mA change to 1.31mA
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Thanks Kerry
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The current source/sink LED (859-LTL-4213) has Vf=2.1V. So, with R1/R4 of 500R, the minimun possible current is 3.15mA. I'm using 1K to regulate the current from 1.65mA and up. For the gain, I'll try 20K for R52/R56 and 10pF for C1/C3. Do you think that these changes are appropriate?
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I don't know if it is too complicated to do (or even convenient) but I believe that moving the heatsinks, and the transistors, to the other side of the PCB would improve the cooling.
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JBC CD-1BD. I alsol keep the previous (analog) model that I have been using for more than 20 years with no problems.
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I don't know if this is a solution but there are dielectric liquid coolants, such as silicones, used in the electric and electronic industry, as an alternative to water.