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15 Threads found on E 300 230
Hello all, does anybody know the standard ETSI ETS 300-230 and in particular the specifications of the modem FFSK @ 1200 bps? Thanks Mowgli
I know very little about SMPS and need to make a reliable SMPS with these data. Input voltage can vary from 230VAc to 500Vac (230,380,440,480 500). Output should be 24VDC at 2A. All schematics or tips are welcome. THanks for your help.
yes you can but VA rating of ups should be higher and you can't remove battery during operation you can calculate your panel size that is around 300 W battery size depends upon run time of motor you need charge controller autonomous day or hrs cheers
Yes. In example picture (post#5) and pictures in manual (web address in post#2) 70995 Simatic Manual, 03/2011, A5E00105505-07 . 630 pages (8.8MB) h
Hi , I have no experience in designing powersupplys but i repair often PC-Monitors and there ar alot of CRT Monitors on the Market with real autoswitching ( 105 -240 Volt ) Powersupplys , most of them have an rating about 100 to 230 Watt . The most PC-Powersupplys that i have seen are not autoswitching . they are fixt in input voltage . My t
if the card for @DS u must modify the model to be hspice like use @DS model transalator to translate @DS model to hspice khouly
input voltage 150V will consume about 0.6-0.7 amp. for 220-240V input, current is lower (about 0.5-0.6A) if we assume current consumption are 0.7A, and voltage change (peak value) 300-210=90V then C=(i/V)*t then C will be : C = (0.7/90) 20(ms)= 155uF you can use 220uF/400V Note: all above values are approximate. regards, Davood
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At a lower power level , I used a 12 to 300 V DC/DC converter and a commercial VFD controller supplied with 300 V DC instead of single phase 230 V AC. You may want to build your own VFD controller, but it doesn't pay for low quantities. It's not particularly a problem to build a 1kW/12V input DC/DC with todays MOSFET transistors, but (...)
Hi all, am working on a sine wave inverter using pic16f877a microcontroller the specification is as follows; the switching frequency is 10khz. output frequency is 50hz. am using ccp1 and ccp2 module. ccp1 switches the first half cycle while ccp2 for the 2nd half cycle. am using h-bridge with ir2110 for mosfet driver. am using a step-up t
You mean the input rectifier? Your circuit is typically used for 115 V mains voltage. By adding two diodes and a switch, you get a selectable 115/230 V input SMPS, with fixed 300 V bus voltage. It uses a 4-diode bridge rectifier for 230 V and the 2-diode doubler for 115 V. Small SMPS are often wide range 100 - 240 VAC, using a bridge (...)
Hello dear i want to design a preampilfier with c945 transistor . at first i want to calculate hie with the IB-VBE garph but i can't find it into any datasheets form different company , could you help me on this?
Hey all, Since power=IV, is it possible to reduce voltage to increase current ( well of course, power being constant)? For example, a dc-dc converter has an output of about 300v at 0.4A, is it posible to reduce the 300v to get 20v at 5A? If possible, how can this be achieved practically? Any circuit/ components, please? Thanks for yo
Hi, I have a HCPL-3700 optocoupler and I need to interface with a pic chip, basically I want to tell the chip when 230 volts is present. I have been told that although the optocoupler has ac or dc input it is best to first convert ac to dc ? Thanks in advance Rizzy