7
10 µs
T
1
(2 s) *1
*2
2 s
2 s
3
2
2
1
1
1
1
0
0
0
0
(c)
(b)
(a)
1 µs or less
10 ms
TPT C0015EA
TPT C0015EA
SIGNAL OUTPUT Q
COUNTER LEVEL
PATTERN
COUNTER
RESET
UVTRON
OUTPUT PULSE
GATE TIMER
(Ex.) When 3 pulses enter in succession within an interval
of 2 seconds, a pulse with a width of 10 ms is output
as the signal output.
Operation Time Chart for Signal Processing Circuit
Figure 8: Operation Time Chart for Signal Processing Circuit
SUPPLY VOLTAGE AND SENSITIVITY
Figure 9 shows a typical relation between the supply voltage and the UVTRON sensitivity. The UVTRON is more
sensitive as the supply voltage is increased, but this also increases the background noise. Keep the supply voltage within
the recommended range.
-10 %
0
50
100
150
200
+10 %
TPT B0031EA
TPT B0031EA
CHANGE IN SUPPLY VOLTAGE
(Recommended Value)
RELATIVE SENSITIVITY (%
)
Supply Voltage and Sensitivity
Figure 9: Supply Voltage and Sensitivity
