Differences

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--- blog:commodore_c64_dtv_hacking [2023/01/31 10:40] – [Power Supply] john
+++ blog:commodore_c64_dtv_hacking [2023/01/31 11:29] (current) – [Power Supply] john
@@ Line 64: / Line 64: @@
 ==== Power Supply ====
-The DTV normally gets ~6v from 4x AA batteries in the joystick. But also has a red LED connected which regulates down the supply to the 3.3v circuitry on the PCB, as used by a number of the chips. If the DTV is removed from the case and original power switch and LED, it is important that a LED is refitted to remain as a regulator.
+The DTV normally gets ~6v from 4x AA batteries in the joystick. But also has a red LED connected which is used as part of the regulator circuit to reduce the supply down to the 3.3v circuitry on the PCB, as used by a number of the chips. If the DTV is removed from the case and original power switch and LED, it is important that a LED is refitted to remain as a regulator.
 //Note: The LED should have a **forward voltage** rating of **1.8v**.//
-=== Power Switch Wiring ===
+=== Power Switch Wiring - DTV 1 ===
 On a DTV 1, the power switch is wired as follows:
@@ Line 93: / Line 93: @@
 {{:blog:c64:img20230131103754.jpg?400|}}
+In summary:
+{{:blog:c64:c64_dtv_v1_psu.png?500|}}
+=== Power Switch Wiring - DTV 2/3 ===
 ==== Joystick Port 1 ====