Recent content by mathew086

I connected an astable oscillator ( F = 5.6KHz i.e t = 0.18ms) . The output was connected to a monistable oscilator, whose F = 10KHZ i.e t = 0.1ms). It was thenconnected to an RC low pass filter. I need a lilttel help with next part. WHen the test Capacitor changes from 10F to 500 pF the...

Heyy all... I connected the test capacitor in place of C1 in an astable oscillator. There was very speculative and perfect chnages in frequency. Now I am trying to connect the output of the astable oscilator to monostable and then use a level detector (somethin like a schmitt trigger) and...

Hey all.. i tried another method for designing the circuit. Used an astable oscilator with the C as my test capacitor. ( producing around 6 KHz to 130 Hz )( from C = 10 pF to 500pF) then used a frequency to voltage converter and get voltage values from 5.6 V to 0.1 V. I am now in...

AT the moment i used the method suggested by berkeman. USed a spade lug and connected to the stainless steel plate. The method suggested by Vk6kro is not possible, because the connecting wire has to be taken to upward. If it was supposed to take at the downside, then it would have been...

Is it a common base transistor or common emitter, ? http://www.datasheetcatalog.org/datasheet2/3/06i96k727i3oloo2gis1ozg0jlyy.pdf" In the data sheet the Base-emitter current is given as 1.2V ( max) [under the given conditons Ic = 500 mA, Vce = 1V] So Emitter base current = 1.2/22 *1000...

Homework Statement Given circuit consists of two resistors ( R1 = 330 Ohm , R2 = 22K Ohm ) , an LED ( Forward voltage = 1.6V, forward current = 20 mA) , a BC 337 NPN transistor and a 9V battery supply. I need to find the total power consumed by the circuit for a run time of continuous 1...

Wet means wthe stainless steel plate is immersed in water( rain water). I need to connect that plate to + terminal of battery via a wire. so will a normal wire wounded with insulation tape all around will work??

I am using MS paint all the time. :p When i use a astable oscillator that produces 4Khz output and connect it to a T bridge and an Op AMplifier. I tried to use an online circuit simulator http://www.falstad.com/circuit/" [Click Circuits on menu bar>555 timer chip > squarewave generator...

Is polystyrene a good insulator for electric field? I gues its just a thermal insulator...Any way i going to try it. Is there a way to detect a change in peak to peak voltage and obtain this change as high or low output?? For example, to detect such a change as in attachment ( 80mV change)

But i tried to solder the stainless steel normally and it worked. ( although some brown reddish material was formed in between.) Also it is strong...I just need to know the type of wire that will withstand in wet conditions... I thought of using a wire crimp on and scre it to stainless steel...

ok..I will have tocheck with the LCR meter I have also noticed another thing. At the moment, during the testing some water came in contact with the outer copper plate and also in the gap between it and the pipe.( I tested with a copper plate. I had a small gap in between them. When i get the...

Hey Vk6kro i would like to ask u something. I connected a copper plate to positive terminal and steel plate to negative terminal of a battery. Now when i connect those plates to a LCR meter and check whether the C changes, there is no change. But when i remove the battery and connect the...

I would like to solder a connecting wire to a stainless steel plate and a copper plate. Both of the plates are in and around wet environments, possibly in water. What type and size of wire could be used to solder them. Specifications? Can i use a normal connecting wire?

I have already seen such pressure sensors. OK still iam evaluating the possible chances...I will let u know if there are any problems. Meanwhile i looked out for something else. I have seen in an article http://www.plantstress.com/Articles/salinity_i/salinity_i.htm that the electrical...

Hmm. actually there is no space for that. But how is it then possible to throw away the water collected in the parallel chamber.? Is there any other way to detect the presence of rain water ( just the rain water only). I thought of using the principle of conductance between two probes so...