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As found on a post, a component will sacrifice itself to protect the fuse. I suggest using a 7808 to supply the TDA amplifier with a lower voltage and also provide current limit protection. There is

VERY GOOD THANKS HOW ABOUT A PARTS LIST, NO VALUES IN PRINT

Jerry, TDA2822D is LOW power compared to the 8 pin DIP. Check and compare.. the 16 pin DIP has even greater output! Raj

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I would like to build this unit, but the problem is I cannot print it out so I can read it. it is all fuzzy. can anyone help me with this bob bailey WB7DMX

Clark Martin KK6ISP Mouser has it for $1.19, minimum buy of 1. The part number is listed as TDA2822D013TR. The data sheet doesn’t show anything about the 013TR suffix so it’s likely referring

Pilot Lamp Bulbs. Here is a chart from the past.? Guys that build tube guitar amps still buy them. #47 was the most popular when I was a kid, #44 to get more Light. There would be a lot of

Now that we have a bunch of sources for the part, I might be more inclined to experiment. Resistance of a small incandescent bulb can go up a factor of 10 when it gets

I ordered on eBay. Ordered the TDA2822L and the TDA2822M. The L comes from the US and I paid $3.99 for 5 The M comes from China and I paid $2.75 for 10. So at least I will have some spares. First

I wonder if a small light bulb. like the old standby #47 could protect a speaker short. Maybe some type fast lo-mass fast Thermistor??? Something that has small resistance, but goes up quickly with

Tayda has the TDA2822L for $0.29 each with 126,973 available. It’s an 8 pin DIP. Didn’t see any glaring differences looking at the data sheets but another pair of eyes might see something. Also

Hi Qonita, This sounds like a good project, most of what you are doing will involve programming. Hardware wise you’ll need to setup the output filters as either lowpass or bandpass. All Maritime

NJM2073D seems to be a replacement for TDA2822, price is about one dollar: http://mklec.com/components/integrated-circuit/op-amps/jrc-njm2073d-stereo-audio-power-amplifier 73 Allard PE1NWL

Thanks Tim. One additional benefit of the MAX9814 solution is the reduction in TX pops both when switching in and out of Tx mode. How much reduction is dependant on the sensitivity. At 30% input

Ah, the TDA82822D part in the SOIC8 package is a good find. Feeling much better now! Digikey has it for a bit over a dollar (Mouser says a minimum buy of 2000). Maybe hfsignals will move to the more

Ok! So I tried what was suggested and here is what I found. R253 was bad and I was able to replace but that did not fix. I suspect a blown TDA2822M. I have one on order, so now I wait until it

http://www.wallcoinc.com/NTE_NTE7155_IC_DUAL_AUDIO_POWER_AMP_p/wal7-nte7155.htm http://www.weisd.com/test/GenericParts_WEISD_view.php?editid1=D2822 73's WA5RDG

The chip is rated to work with a 4Ω load so a 4Ω resistor should do. I doubt the chip would blow so fast that FB fuse wouldn’t protect it. Clark Martin KK6ISP

The TDA2822D in effect replaces the “M” version. It appears the same except it’s an SMD part. You can get SMD to through hole adapter boards that would let you use one with the ?BitX. It

Better be a pretty darn fast fuse. I'll go with an 8 ohm 1/2 watt series resistor to limit current. At least till I find a good source for TDA2822M chips. I'm fairly certain that resistor will offer