MR-BusIO-DCOUTTM BusIO DC OUTPUT BOARD User Manual GRAVITECH.US uResearch GRAVITECH GROUP Copyright (c) 2007 MicroResearch GRAVITECH GROUP WWW.GRAVITECH.US MR-BusIO-DCOUTTM BusIO DC OUTPUT BOARD User Manual Description The MR-BusIO-DCOUT is an experiment board for switching DC output voltage by using NPN Power Transistor 2SC1061. The advantage of this transistor is VCE(sat) = 1V (max.) at IC = 2A and IB = 0.2A. The output DC voltage is switching ON and OFF by TTL level 5VDC. It is using PC817 Photo-coupler IC to isolate high current and low current. It is best for controlling DC voltage for up to 50V at 3A. The board can be use with MR-BusIOMAIN board or stand-alone. PCB size is 0.63" x 2.80" Operation: The PC817 require at least 5mA to drive input photo-coupler LED. It can take up to 6V in reverse bias. For an output (between collector and emitter), it can drive up to 35V with 50mA continuous current. The operation of this board starts when applying logic HIGH to an I/O pin. The voltage get divide down to turn on BC547 transistor which then activate PC817 photo-coupler and indicator LED. The output of PC817 is driving 2SC1061 which start the current flow at the 2-PIN terminal block. MR-BusIO-MAIN The MR-BusIO-MAIN is available for purchase via our website. If you don't see the item you need, please contract our sales department at sales@gravitech.us * MR-BusIO-MAIN Experiment board which receives output signals from any microcontrollers. The signals then distribute to daughter boards for each experiment. It designed to connect directly with 10PIN MRconnect(c). It is a quick and easy way to control up to 8 daughter boards. User can connect output DC load up to 50V at 3A continuous current. Total power can be up to 25W at 25C. This board can be use to control DC voltage. Copyright (c) 2007 MicroResearch GRAVITECH GROUP WWW.GRAVITECH.US MR-BusIO-DCOUTTM BusIO DC OUTPUT BOARD User Manual FIG 1: MR-BusIO-DCOUT Board Layout FIG 2: MR-BusIO-DCOUT Schematic Copyright (c) 2007 MicroResearch GRAVITECH GROUP WWW.GRAVITECH.US MR-BusIO-DCOUTTM BusIO DC OUTPUT BOARD User Manual Notes Contact Us We maintain a website where you can get information on our products, obtain literature and download support files. Visit us online at: WWW.GRAVITECH.US For sales questions or to place and order, direct your e-mails to sales@gravitech.us. Refer to our website for product pricing, shipping rates, payment instructions, and for other info we need to complete your order. Use our online Forum or e-mail your technical support questions to support@gravitech.us. We try to respond to your questions the same day. Disclaimer: MicroResearch reserves the right to modify its products or literature, or to discontinue any product at any time without prior notice. The customer is responsible for determining the suitability of any device for any application developed using MicroResearch components. Copyright (c) 2007 MicroResearch GRAVITECH GROUP WWW.GRAVITECH.US Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Gravitech: MR-BUSIO-DCOUT