Digital Sensor TTP223B Module Capacitive Touch Switch Step Down Power Supply 1 MHz and 25°C:

1 MHz and 25°C:

as the MOV is connected in parallel to the AC mains

Efficient pre-regulator for linear regulators

The gain is internally set to 20 to keep external part count low

Brown for these 11K resistors

Digital Sensor TTP223B Module Capacitive Touch Switch Step Down Power Supply 1 MHz and 25°C:It's a Digital Sensor TTP223B Module Capacitive Touch Switch. The Digital Sensor TTP223B Module Capacitive Touch Switch is based on a touch sensing IC (TTP223B) capacitive touch switch module. When a touch is sensed on the circular marked region, it outputs high and switches to the quick response state. When not being touched for 12 seconds, it switches to low power state again. In addition to the thin paper (non metallic) covering the surface of the