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The 8V and -8V regulator input voltage is around 15.3V, and -15.3V
Yes it is a lot of extra to dissipate, but they come directly from the transformer and bridge rectifier, so cannot be changed. Based on the schematic, they should be +14V and -13.5V
The +5V and +8V reg. heatsinks are much cooler...
Hello.
I have a GOS 602 scope, (same as the Tenma 72-6800 which already has a thread here on forum) which works fine. I only got it a few days ago.
My concern is, that the -8V regulator (U601) and the 4 vertical power transistors (Q313, Q314, Q315, Q316) get extremely hot. 80+ deg C, or maybe...
Hello!
I would like to share my newest project, a GPS data logger, that I'm planning to use mainly for outdoor activities, hikings.
It was made almost entierly from reused parts, it has a mobile phone display, and also features a graphical compass.
For mor information, schematics, complete...
i2c+radio
I actually tested before, on setting up the chip, and it is working.
I have found the problem for reading the chip. The I2C communication was too fast.
The AM part is still not clear :cry:
For example a divider value of 53502 would give an input frequency of 0Hz...
radio i2c down
Thank You for helping!
I think I understand most of it now, but still have some unclear areas.
As I said earlier, for 3 and 5 divider values (N2) I got nothing troughout the whole tuning range.
Conform to datasheet, the AM ranges from 510KHz to 1710KHz.
Lets presume that I'm...
dlportwriteportuchar scl
Writing the chip works perfectly, I am able to tune the whole FM range without any problems. I attached the schematic for SDA. I've also tried with a 10K pullup resistor, but still nothing.
i2c radio
Hi!
I got from a car radio, a TEA6820T+TEA6811 based stereo tuner.
https://www.alldatasheet.com/datashee.../TEA6820T.html
https://www.alldatasheet.com/datashee...S/TEA6811.html
For testing im using the parallel port in EPP mode. I made some software I2C routins, which I use for...
hi,
I've got a stereo VFD VUmeter based on the AN6870N, which I would like to connect to the line out signal of a sound card, CD player...
From the data sheet, the IC can handle an input voltage between 0 and 8 Volts. I need some ideas to make this work, probably with an opamp with gain and an...
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