pistol dch

[kostas87]

Hi Kostas 87, thank you for your comment. I don't use dta 7000. Do you think it's necessary?

Now you have an electrostatic detector and you do an electrostatic detection. If we add the TDA 7000 radio we do a small radio detection with the oscillator of course 555 helps the distance. It's like putting your hand on an antenna on the radio and it changes sound, this catches. Although I don't think they are able to catch the phenomenon so easily in our country.(Greece)
Do some tests with everything maybe you'll be lucky and you'll need a lot of luck to make it detect buried metals long buried. good luck!

[Zicos]

thanks for the clarification Kostas. good luck to you too,👍

[Zicos]

[url]https://youtu

[Zicos]

https://youtu.be/C1S5ih5E3hc?si=UdtQ...MnZBaccidental discovery

[Zicos]

hello everyone. so i did experiments with the dch85 circuit that is on the forum and turning the 1MΩ trimmer of the 741 i saw the trimmer glow and smoke coming out. i tested the trimmer and it is ok. is there a chance that the 741 is broken??? why did this happen??? i also made the tda 7000 circuit and connected it to a ready amplifier to see if it will play music and i noticed that the tda after a few seconds starts to heat up and i turn it off so as not to damage it. is it normal for the tda to heat up or is there a fault? (will i save the fire 🔥🔥🔥 or not 😂😂😂

[Pahom]

hello everyone. so i did experiments with the dch85 circuit that is on the forum and turning the 1MΩ trimmer of the 741 i saw the trimmer glow and smoke coming out. i tested the trimmer and it is ok. is there a chance that the 741 is broken??? why did this happen??? i also made the tda 7000 circuit and connected it to a ready amplifier to see if it will play music and i noticed that the tda after a few seconds starts to heat up and i turn it off so as not to damage it. is it normal for the tda to heat up or is there a fault? (will i save the fire 🔥🔥🔥 or not 😂😂😂

It shouldn't be like this. Or there are errors in the diagram and on your layout. What voltage is powered by the tda 7000?

[Zicos]

The tda7000 has a 5 volt supply via a 7805. The circuit is built on a breadboard.

[Zicos]

This is circuit

[Dubulumach]

DCH85

[Pahom]

This is circuit

5 volts is fine. Does the radio work by itself without a DC circuit? once I ordered two tda7000s, one was not working.

[Zicos]

Your information is very important Dubulumach 👍. I wish you the best.

[Zicos]

Pahom I tested the tda 7000 only with voltage on pin 5+ and pin 16 gnd voltage 4.5 volts and the current it consumes is 90 ma. I'm crying for my money 18.31?. I will look very carefully where to order from.

[Dubulumach]

7000

[Geo]

Hello Dragan, how are u????

[Dubulumach]

Είμαι καλά. ευχαριστώ Geo.