2Ap1:3 Secondary Circuit - ESAB Caddy Tig 2200i AC/DC Service Manual

Transistor Q5 is the switching element in a switched voltage supply. The
secondary voltage, +24 V, is sensed by IC2 and controlled by IC1.
The isolation voltage of transformer T1 and optocoupler IC3 is 4 kV.
+15V A
Internal power supply to 2AP1 and power supply to the PFC circuits of the
power board, 15AP1.
The voltage is controlled by VR1, it has a tolerance of ±0.75V.
2AP1:3 Secondary circuit
The secondary circuit delivers the following voltages:
+24 V
The voltage is controlled by IC1 on the primary side. It has a tolerance of
±0.6 V.
+5 V
The voltage is controlled by VR3. It has a tolerance of ±0.25 V.
- -15 V
The voltage is controlled by VR2. It has a tolerance of ±0.75 V.
+13 VB (+12V CAN)
This voltage is unregulated. It has a tolerance of ±1.5 V.
S0740 800 179/E071123/P64
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