Elektor TAPIR Посібник з будівництва - Сторінка 12

Переглянути онлайн або завантажити pdf Посібник з будівництва для Датчики безпеки Elektor TAPIR. Elektor TAPIR 15 сторінок. E-smog detector kit
Також для Elektor TAPIR: Посібник з будівництва (9 сторінок)

Друкувати сторінку

Figure 28. The E-field antenna is ready.

The H-field antenna

Next comes the H-field antenna. For this you will use the supplied coil

(plastic-wrapped inductor). Trim the coil leads to approx. 4 mm. Cut two

lengths of stiff wire approx. 5 cm long and strip their ends.

Figure 29. The parts for the H-field antenna. The two 5-cm wire pieces

are already stripped.

Solder one end of each wire to the Cinch connector ("signal" and "shield")

and screw the connector together.

Figure 30. Wires connected to RCA plug and coil leads trimmed.

Elektor "TAPIR" E-Smog Tester Kit | Construction Manual

12/15

If you are using heat-shrink tubing, slide a piece of tubing over each wire.

Then solder the wires to the coil leads (the polarity does not matter) and

insulate the bare wire ends and coil leads. The H-field antenna is now

ready for use.

Figure 31. Finished H-field antenna.

Bear in mind that when you hold the TAPIR in your hand, your body is

part of the antenna, which may increase the audible hum level.