How to drive an inductive load with pulsated dc

Sir, I need to design a high speed electromechanical pneumatic valve with 1 mS response time. The electrical specification of the valve is 15v-35v, 200mA, 1mS ON/OFF delay.

For the specified voltage rating i have placed a regulator first. Because the coil will operate with 12v pulsated DC supply only. The dc resistance of the coil is 37E and the inductance 48mH.

To reduce the driving current of the coil, i decided to give 100khz pulsated DC supply to the coil. The coil [electromagnet] is operating under the specified current rating for 100khz.

Now i need a low cost square wave generator IC and it should be very low power on settling time [in micro seconds]. I have attached the block diagram of this valve.

I need lot of quantities so low cost is must. So the circuit2 is very useful for me.

Thank you...., please suggest a suitable IC [sorry for my English]

udhay_cit said:

please suggest a suitable IC [sorry for my English]

Click to expand...

I think a "555" timer IC (available from a lot of semi companies) + 2 resistors + 2 capacitors will achieve the cheapest solution for your circuit 1 (NMOS driver). For more info, start here or there. Scroll down or search for "astable".
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PS: Your English is quite good, Sir!