{"id":17399,"date":"2026-09-04T10:23:29","date_gmt":"2026-09-04T08:23:29","guid":{"rendered":"https:\/\/ledstripstudio.com\/lss2026\/shop\/?post_type=product&p=17399"},"modified":"2026-10-14T09:48:58","modified_gmt":"2026-10-14T07:48:58","slug":"powered-bulb-dimmer-dual-polarity","status":"publish","type":"product","link":"https:\/\/www.ledstripstudio.com\/shop\/product\/powered-bulb-dimmer-dual-polarity\/","title":{"rendered":"Powered Bulb Dimmer Dual Polarity \u2013 64-Channel SPI Dimmer"},"content":{"rendered":"

The Powered Bulb Dimmer Dual Polarity is a 64-channel SPI<\/a> dimmer with a built-in power supply. It drives 31\u201333 V constant-voltage fixtures with anti-parallel LED connection. In other words, it dims the lights that ordinary drivers cannot handle.<\/p>\n

Why anti-parallel fixtures need their own dimmer<\/h2>\n

Two sets of diodes share one pair of wires. The polarity decides which set lights up. Most Christmas light strings and CCT bulbs work exactly this way. A standard dimmer, however, only raises or lowers the whole fixture at once.<\/p>\n

How the Powered Bulb Dimmer Dual Polarity works<\/h2>\n

Each of the 64 outputs handles both polarities on its own. First, the opening 8 bits of the WS2811 signal set the PWM<\/a> level of one polarity. Then the next 8 bits set the other one. As a result, you dim odd and even sections of a string separately. In a CCT bulb, the same principle gives you warm and cold white from one output.<\/p>\n

One box, no separate LED power supply<\/h2>\n

Everything sits in a single aluminium enclosure. Therefore the installation needs no extra LED driver. Mains power arrives on a PowerCON connector and passes through to the next unit. SPI enters and leaves on ESD-protected RJ-45. In addition, two status LEDs show power and signal. The data run reaches 100 m on Cat5e cable.<\/p>\n

Key details<\/h2>\n