Instruction Sheet - 3B SCIENTIFIC PHYSICS 1000614 Instrucciones De Uso

3B SCIENTIFIC ® PHYSICS

Instruction sheet

12/12 ALF
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1. Safety instructions
Hot cathode tubes are thin-walled, highly
evacuated glass tubes. Treat them carefully as
there is a risk of implosion.
• Do not subject the tube to mechanical
stresses.
• Do not subject the cable connected with the
anode to any tension.
• The tube may only be used with tube holder
S (1014525).
If voltage or current is too high or the cathode is
at the wrong temperature, it can lead to the tube
becoming destroyed.
• Do not exceed the stated operating parameters.
When the tube is in operation, the terminals of
the tube may be at high voltages with which it is
dangerous to come into contact.
• Only use safety experiment leads for con-
necting circuits.
• Only change circuits with power supply
equipment switched off.
• Only exchange tubes with power supply
equipment switched off.
When the tube is in operation, the stock of the
tube may get hot.
• Allow the tube to cool before dismantling.
The EC directive on electromagnetic compatibil-
ity is only guaranteed when using the recom-
mended power supplies.
Triode S 1000614
3 4 5
6
The triode allows basic experiments to be per-
formed using the Edison effect (thermionic ef-
fect), determining the negative charge of elec-
trons, recording triode characteristics and gen-
erating cathode rays (model of an electron gun).
It also allows investigating the technical applica-
tion of a triode as an amplifier and generating
undamped oscillations in LC circuits.
The triode is a highly evacuated tube with a pure
tungsten heater filament (cathode) and a round
metal plate (anode) with a wire grid between
them, all inside a clear glass bulb. The cathode
anode and grid are all aligned parallel to one
another. This planar configuration corresponds
to the conventional symbol for a triode. A circu-
lar metal plate attached as a backing to the fila-
ment ensures that the electric field between the
anode and cathode is uniform.
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7 1 Guide pin
2 Connection pins
3 Cathode plate
4 Heater filament
5 Grid
6 Anode
7 4-mm plug for connect-
ing anode
2. Description