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now what i hav done..i am using a xr2206 function generator . i have generated 50hz sien wave..and fedding to tda7294 and now vibration is good but not exactly like AC..the reason i think is that the sine wave that i am generating is not touching ground(2V min and max 6V). i have tried many...
i am operating that vibrator on 50V ac with 3A current..
i can not control vibrations using PWM. i want to control it with voltage change i.e. by providing variable output voltage(50V 50Hz or 30V 50 Hz etc.). thats why i m using audio amplifier.
hii all
i m working on a project in which i have to control vibrations with dc signals(PWM) instead of 50Hz ac. i m using an ac vibrator. i m using TDA7294 amplifier to drive ac vibrator and at input i m applying 50hz pwm. problem is that i want 50V maximum output for vibrator...
my...
can you provide me a working circuit of igbt.. i want to control speed of 24V dc motor. i think that my capacitor values are not accurate.although i am able to switch igbt ON and OFF. but not getting the collector(drain) voltage at emmiter...i m very much disappointed please help..
thanx 4 reply ... 1st of all i m sory bcoz m new user..
i m measuring voltage one probe at emitter of upper igbt and second at ground...i m using digital multimeter...
is it possible to test single igbt circuit.if i simply apply 24V at collector of igbt and apply a high logic at Hin pin..???
hii all,
i am trying to control speed of a 24V dc motor with igbt(CT60). i am using ir2110 ic as igbt driver. my igbt is giving output 8V only...i hv attached my circuit..i have already used this circuit before. but i need 24 v out.
please help
hey guys please help me its urgent..
i am using pic16f877a with 8Mhz crystal. i want to send the value of temperature through gsm. my hardware sis working , i am facing a problem.
if i use internal adc and uart te send data to gsm or hyperterminal it is not working properly but when i display...
guys i solved the concept of a bipolar signal...
according to my knowledge adc 0804 can not convert a digital value of a -ve signal.
so if we are applying a +2V , -2V peak to peak sine ,triangular or square wave, 0804 will only convert data for +ve side.
when -ve signal is coming 0804 is giving...
hiii everyone
i am generating a 3V sine wave and giving to adc0804 and the output of 0804 is connected to dac0808 .the output i m getting on cro is a +ve signal only. -ve part is clipped. what should be the error.??? is it 0804 negative input????????/ Please help
Re: sim300 start google
hiii,
i want to transfer some data on internet(any site),i am having sim300 module and i know gsm command set.to use gprs i need
1. commands of gprs.
2. when we activate gprs in cell , we require cell setting.when we'll use that sim in sim300 module then...
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