SR037DB1 - Supertex Inc

SR037DB1 Inductorless Switching Power Supply

SR037DB1 Inductorless Switching Power Supply Introduction The Supertex SR037 is an inductorless switching power supply controller intended for 120/240VAC line operation. The operating principle is to activate a pass element between line and load only when the input voltage is lower than a certain value. Thus conduction only occurs with a low voltage drop acr.

Features

d of other earth-grounded instruments. Doing so will short the AC line, resulting in damage to the circuit and/or instrument. Either use an isolation transformer on the AC line, use a differential probe, or use a floating, battery-powered instrument to make measurements. VREG VUNREG WARNING!!! No galvanic isolation. Dangerous voltages are present when connected to the AC mains. ACIN Connect to the AC line. The AC input is protected by a 400V transient voltage suppressor and a 250mA fuse. GND Circuit common. Note that since galvanic isolation is not provided, connecting this point to an ear.