Somebody interested to clone and rebuild BGW 750A BGW 750B BGW100
with todays devices and small improvements ?
Gerber Files to share available
Scalable Class AB Output Power or Class TD with Rail Switcher Driver Board (under Development not ready)
Using Mosfet FDA69N25 Output Devices instead of Bipolar in Original design
+95 V DC Rail Class AB with 5 Pair FDA69N25 1000 W RMS
+70 V DC Rail Class AB with 2 Pair FDA69N25 for reliable operation
Attachment Schematic, PCB Layout & PCB 3D View small power Class AB 1 pair
FDA69N25
Improvements:
Crowbar DC Protect
DISPLAY Power, Signal and Clip, Clip Limiter
Cascoded for better linearity and speed
KSA1381 KSC3503 instead of MJE340 / MJE350 Devices
LM35DT Sensor for variable speed temperatur controlled Fan
with todays devices and small improvements ?
Gerber Files to share available
Scalable Class AB Output Power or Class TD with Rail Switcher Driver Board (under Development not ready)
Using Mosfet FDA69N25 Output Devices instead of Bipolar in Original design
+95 V DC Rail Class AB with 5 Pair FDA69N25 1000 W RMS
+70 V DC Rail Class AB with 2 Pair FDA69N25 for reliable operation
Attachment Schematic, PCB Layout & PCB 3D View small power Class AB 1 pair
FDA69N25
Improvements:
Crowbar DC Protect
DISPLAY Power, Signal and Clip, Clip Limiter
Cascoded for better linearity and speed
KSA1381 KSC3503 instead of MJE340 / MJE350 Devices
LM35DT Sensor for variable speed temperatur controlled Fan
Attachments
BGW 750B Power Supply drops from +/- 86 V DC to about +/- 65 - 70 V DC at full output power. To drive bipolar Transistor output stage is safe and reliable, but its to less power.
BGW 750B redesigned +/- 95 - 110 V DC Rail - Class AB
5 pair N-Channel Switching Power Mosfets is safe and reliable also there is a huge improvement in sound clarity compare to slow bipolar transistors
Expected output power is 1000W RMS or 2000W Programm Power
BGW 750B redesigned +/- 95 - 110 V DC Rail - Class AB
5 pair N-Channel Switching Power Mosfets is safe and reliable also there is a huge improvement in sound clarity compare to slow bipolar transistors
Expected output power is 1000W RMS or 2000W Programm Power
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.