[single ended output stage]

whole output stage is going to be put on a PCB. So transformer similar in size to the one I used before will do. No specific size constraint is there

[single ended output stage]

Thanks

I need the transformer to boost the voltage. Can you suggest me any transformer with small size and with higher power rating? I tried but was not able to fine one

[single ended output stage]

Hi

I am building a single ended MOSFET output stage and the circuit is attached. I am using Wideband transformer WB4-6.Its datasheet is attached. I need to drive a a transducer which can be assumed to be a 20 ohm load. The problem I am facing is the max. input current rating of the transformer is 250mA. My current is exceeding this limit. How can I make sure that current is lowered without changing the power supply. I have fix power supply of 5V, 15V and 8V.

Thanks :)

WB4-6.PDF

[final year project: a blind stick that uses different sensors, help needed]

actually i want a blind stick which doesn't need any power supply. so what i plan is to first convert the pressure into electrical energy using a piezo pressure sensor. so that when a person hits the stick on the ground the pressure will be converted into electrical energy and then I can use this electrical energy to operate ultrasonic sensor and comparator. But the problem is for the comparator circuit i will need a constant power supply and also for the ultrasonic sensor. I planned to use the sensor posted in the above posts the MaxSonar EZ1 but the requirement of constant power supply is posing a problem.

Can you suggest a way to over come this constant voltage problem. may be some sensor which doesn't require a constant power supply or anything else 

[final year project: a blind stick that uses different sensors, help needed]

hi again

I have read this thread. i have thought of making my blind stick with the help of a ultrasonic sensor, a comparitor and finally a piezobuzzer. however the sensor requires a 5 volt power supply which has to be provided by a piezoelectric material. so i need to know if there are any piezo ultrasonic sensors that could work without any power supply and if not, then how should I go about it since the sensor would require a constant power supply.

thanks  :)

[final year project: a blind stick that uses different sensors, help needed]

Heck, I'd do this the analogue way because it's easier and cheaper: a VCO connected to a speaker or piezo buzzer, could monitor the voltage and increase the frequency of the tone or pulsed tone as the object is approaching. Don't bother with an expensive VCO IC, it's easy to make one from a couple of op-amps.

i am b.tech third year student and i have been given a project to develop a walking stick for the blind using piezoelectric sensors.could you please guide me along these lines and also suggest some references which can guide me from the grass root level.