Recent content by rohitsay89

Yesterday I bought an Ultrasonic Transducer pair. i am trying to work with it. i am giving a 40khz square wave 14Vpp(peak to peak) to the transmitter and trying to receive it through the receiving transducer. but cannot get any voltage at the receiver. please help me out...

sorry for the inconvenience created i am sending the edited schematic of the circuit. by the way i had written in my 2nd thread about the voltage levels..

thanks for your reply.. but still the problem exists.. the transistor v3 is not getting off when the output(23v) is shorted to ground. i am using the proteus software to simulate the circuit. i was also thinking in the direction to somehow switch off the transistor v3, but can't get anything..

uploaded a jpeg version.

this is the circuit with which i am working please replace the resistors R2 with 470ohm R3 with 120ohm R4 with 220ohm also the supply voltage is +24v and gnd.

I am making a totem pole digital output of 1.5-23v. i was searching for a protection circuit for the output short to ground and +24v dc. please help me out by sending a diagram of the circuit if possible.