EA 600 / Base version
58
857-164688 / E
How it works
The converter operates at a switching frequency near 1 MHz,
and its efficiency is approximately 80%. The mains converter
section accepts input voltages from 95 to 265 Vac and
alternation frequencies from 50 to 400 Hz.
The internal 12 VDC is available at the 12 VDC connector at
the front plate. This connector is used for either powering the
GPT from a standard car battery or for charging the battery
from the mains. Protection against reverse battery polarity has
been included.
High Volt
Converter 2
High Volt
Converter 1
Mains
Converter
Switch
Remote On/Off
(From I/O PCB)
+ 5V
Regulator
+ 5V DC (D1)
- 12V DC (D3)
- 12 V
Regulator
Ref. 2
Ref. 1
HV 2 (D5)
HV 1 (D4)
TWIN
95 to 265 V AC
Polarity
secured
(CD 6755)
POWER
12 VDC
HV 1
HV 2
115-230 VAC
+5 V
+12 V
+ 12V DC (D2)
-12 V
Fuse 10A
HV 1
HV 2
+5 V
+12 V
-12 V
Figure 23 Block diagram - power supply
Facilities
LEDs
There are several diodes:
• D1: +5VOK
• D2: + 12V OK
• D3: - 12V OK
• D4: HV1 is transmitting (TRX 3)
• D5: HV2 is transmitting (TRX 1)
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