3B SCIENTIFIC ® PHYSICS
Franck-Hertz tube control unit U8482130
Instruction sheet
02/08 ALF
The apparatus conforms to the safety requirements
for electrical equipment for measurement, control
and laboratory use of DIN EN 61010 part 1 and is
classified as belonging to protection class I. It is in-
tended for operation in dry rooms that are suitable
for electrical equipment or installations.
Safe operation of the apparatus is guaranteed with
correct handling. However, safety is not guaranteed if
the apparatus is handled improperly or carelessly. If it
is to be expected that safe operation is impossible
(e.g., in case of visible damage), the apparatus is to be
rendered inoperative immediately and to be safe-
guarded from unintentional use.
1. Safety instructions
In schools and training institutions, operation of the
apparatus is to be responsibly supervised by trained
personnel.
•
Before first use, check if the apparatus is designed
for local line voltage.
•
Before start of the experiment, check the appara-
tus for damage.
•
In case of visible damage or functional anomalies,
render the apparatus inoperative immediately.
•
The instrument may only be connected to the
mains via a socket that has an earth connection.
•
Allow only trained electronics specialists to open
the apparatus.
1
1
FH signal input
2
Rotary knob for FH
signal amplitude
3
Rotary knob for reverse
bias
4
Power switch
5
Control grid output
6
Toggle switch
manual/ramp
7
Accelerating voltage
output
8
Rotary knob for accel-
erating voltage
9
Heater voltage output
10 Rotary knob for heater
voltage
11 Cathode output
12 Chassis ground for
neon tube
13 Accelerating voltage
output/10
14 Ground socket
15 FH signal output