A PCB with the name EFFENDY D-900BE caught my attention because there was someone’s code name on it

I was reminded of a well-known PCB and component trader in the online world called MUARIF EFFENDY. Is it him?.

EFFENDY consistently sells electronic module and component products from his online store. Maybe the Class D PCB with his name is his creation.

The following is the appearance of this EFFENDY stamp class D amplifier PCB:

HOW TO GET THIS PCB

You can purchase this PCB in olshop below:

• MHL ELEKTRONIK (CHECK PRICE)
• IMAM TECH INNOVATION (CHECK PRICE)

TO PURCHASE THE MODULE EFFENDY D-900BE

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• NABHAN 10 (CHECK PRICE)
• PATRICK 86 (CHECK PRICE)
• GUMELAR 98 (CHECK PRICE)
• TECHNO ZONE HUB (CHECK PRICE)
• AGAM3 (CHECK PRICE)
• BASARIA (CHECK PRICE)
• KORINA22 (CHECK PRICE)

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TRACED SCHEMATIC DIAGRAM OF EFFENDY D-900BE

The following is the tracing result schematic of PCB number 355 with the name EFFENDY D-900BE:

Note: My traced schematic could be wrong.

The schematic is consists of many section block:

• Sine To Triangular Wave
• Buffer Amplifier
• Phase Shifter
• Pulse Width Modulator Converter
• MOSFET Final Amplifier
• LC Filter
• Speaker Protector

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SEE ALSO:

Various audio schematic inside this blog at THIS LINK.

Many DIY schematic in Yohan’s blog READ HERE.

Blogspot of Yohan From Indonesia in THIS LINK.