Speck and radio
ZXNet echo conference «hardware.zx»
From Alexandr Kushnikov → To All 16 October 2002
Greetings, All!
Music antenna I have the center set somehow incorrectly. Regular staff
The music center wiring is soldered to the indoor two-pin antenna from the TV. When
radio operation on some stations, for example, 90.3 MHz, there is strong interference if
Spec enabled Speck stands approximately 2.5 m from the music center. Also on
The work of the music center is affected by my location in the room. Reasons for what is happening
are clear enough to me. The question is how to effectively deal with this?
It is even possible to move the antenna outside the window, but how to shield it?
Best regards, Alexander Kushnikov aka Sander.
From Kirill Frolov → To Alexander Araktcheew 3 December 2002
Press RESET immediately, Alexander!
28 Nov 02 22:55, Alexander Araktcheew wrote to Kirill Frolov:
SK>>> Who told this joke? Or their own Teploukhov
SK>>> developed theories? Power of 2 W at a load of 1 MΩ
SK>>> will be released at a voltage of about one and a half kV. And in general
SK>>> grounding something through a megohm resistor is pointless, however
SK>>> more on the battery.
KF>> But you must agree - this is a good and safe way. And like
KF>> seems to be grounded, and nothing burned, no one got fried...
AA> Only now the authors of such advice are fighting off Torres at Harvard
AA> :)
AA> People, decide what you need grounding for!
1). In order to connect together the common wire of all devices.
2). So that it is (for this there is advice with a 1M resistor).
AA> If for what normal people understand by this, then without climbing
AA> a shield is indispensable.
There is no grounding in the shield either. As far as I understand, this is a grounded zero:
F1 ------ --
Tr-tr F2 ------ -- --
F3 ------------------- consumer
0 --------+----------
|---
-
Am I right?
AA> And if you also know how it is measured, then the battery will disappear
AA> final.
Why is it not needed to ground the computer? Justify.
In my opinion it fits very well.