- Joined
- Jan 1, 2000
- Messages
- 16,226
- Reaction score
- 4,197
- Points
- 113
- Age
- 81
- My Satellite Setup
-
Triple Dragon, Dreambox 8000, Echostar AD3000ip, TBS6522,6925,6983 PCie cards.
Gibertini 1.25m motorised dish driven by the AD3000, with either Inverto BU Quad or Norsat / XMW Ka LNBs . SMW 1.05m + 3 other dishes. Speccy: Promax HD Ranger+
- My Location
- The Flatlands of East Anglia
I've drawn up a circuit diagram for the SMPS of this receiver. More for my own curiosity and not exactly of professional quality, however it shows all components including positioner relays etc.
It might come in handy for circuit tracing in the (likely) possibility of a fault occuring in the power supply.
Here's a list of the main semi's -
TR1- BT137 Triac
IC1- 1H0565 Power Switch
IC5- Power Switch (for motor drive)
BD- PBS606G Bridge Rectifier
IC2,6,8- L9941 Optocouplers
IC3,4,7- KA431 Prog.Shunt Regulators
D5- SB860 Schottky Diode
D13- U16C20 Power Rectifier
D16,17- P6KE6.8A Transient Voltage Suppressor
Q1- IRFZ24 Power Mosfet
Q2,Q7- 2SC945 NPN Transistor
Q3,Q4- 2SC3205 NPN Transistor
Q5- 2SA1273 PNP Transistor
Can't see a Q6 (?)
(R3 is 15kohms - often discoloured and unreadable visually due to overheating.)
Edit: Added official schematic pdf. Much better than my effort.
Llew
It might come in handy for circuit tracing in the (likely) possibility of a fault occuring in the power supply.
Here's a list of the main semi's -
TR1- BT137 Triac
IC1- 1H0565 Power Switch
IC5- Power Switch (for motor drive)
BD- PBS606G Bridge Rectifier
IC2,6,8- L9941 Optocouplers
IC3,4,7- KA431 Prog.Shunt Regulators
D5- SB860 Schottky Diode
D13- U16C20 Power Rectifier
D16,17- P6KE6.8A Transient Voltage Suppressor
Q1- IRFZ24 Power Mosfet
Q2,Q7- 2SC945 NPN Transistor
Q3,Q4- 2SC3205 NPN Transistor
Q5- 2SA1273 PNP Transistor
Can't see a Q6 (?)
(R3 is 15kohms - often discoloured and unreadable visually due to overheating.)
Edit: Added official schematic pdf. Much better than my effort.
Llew
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