Cisco 2811 - Voice Security Bundle Router Manuel de démarrage rapide - Page 25
Parcourez en ligne ou téléchargez le pdf Manuel de démarrage rapide pour {nom_de_la_catégorie} Cisco 2811 - Voice Security Bundle Router. Cisco 2811 - Voice Security Bundle Router 45 pages. Integrated services routers
Également pour Cisco 2811 - Voice Security Bundle Router : Opérations (31 pages)
Imprimer la page
Note
When source A and source B are wired with common negative terminals, as in Figure 22, discharging does not occur
and there is no restriction requiring that source A and source B voltages be equal.
Figure 23
Connecting Source A and Source B with Common Positive Terminals
Va voltage = Vb voltage (within 0.25 V)
Va
+
+
Vb
In Figure 24, source A and source B are wired with opposite polarity grounds. Do not use this configuration.
Do not use the DC input configuration shown in Figure 24.
Caution
Figure 24
Source A and Source B Wired with Opposite-Polarity Grounds
Va
Va
+
+
+
+
Vb
Vb
Va voltage = Vb voltage (greater than 0.25 V)
A-
A+
B+
B-
A-
A-
A+
A+
B+
B+
B-
B-
A-
A-
Va
Va
+
+
A+
A+
B+
B+
+
+
Vb
Vb
B-
B-
25