Elenco Nerve Tester - Manual (Page 7)

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SCHEMATIC DIAGRAM
QUIZ
1. The nerve tester produces a ______________ whenever the probe touches the twisted wire.
2. A “chicken” afraid of the shock will switch the nerve tester to the ______________ position.
3. The LED will light when a positive voltage touches the ___________ of the SCR.
4. Once the LED is lit, removing the probe from the twisted wire will turn off the LED. (true or false)
5. A transformer has ___________ or more windings.
6. A _______________ current in the primary winding will produce voltage in the ___________ winding.
7. The voltage in the secondary winding is equal to the primary voltage times the ratio of the ____________ in
the transformer.
8. The nerve tester produces about a ____________ volt spike for a very short time.
9. There are ___________ spikes of voltage every time the probe touches the twisted wire.
10. The probe has ___________ sides of copper between an insulator.
Answ ers: 1. shoc k; 2. LED; 3. gate; 4. false; 5. tw o; 6. DC, secondar y; 7. turn s; 8. 270; 9. two; 10. tw o
B1
R1
470
Ω
R2
47k
Ω
T1
S2
S1
A
B
D1
LED
C106B
SCR1
H1
P1
Probe