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Hi, I need some help regarding a circuit operation. I will try to describe it as best I can. Input is a 1:1 pulse train of 200-10Khz. This is fed into one input of a NOR gate. Output goes through a 10nF cap to a pullup resistor of 10K. This also goes through a 10K resistor to another NOR...

Anyone know of a cheap +5V switching regulator with the following spec Vin 1.6 - 7.5V Vout +5V Iout 100mA Many thanks

Hi, How can I measure the ripple current through a capacitor? Can I just use an ammeter? Thanks

Is it possible to construct a T-Type flip flop just from NAND gates? TIA

I want to switch a transistor (as below) that will supply current via the 100R resistor when power is applied. However, I would like to be able to turn the transistor OFF and ON using a micro. Any ideas? _______________ +5V | | | | _|_ | | | | |...

Hi, I'm trying to drive a FET via a micro with PWM (ST7FLITE09). I'm doing this via a 22R resistor from Port pin to gate. However when I do this the voltage from the micro drops to about 1V and won't turn on the transistor. Any ideas anyone as I am stuck???

Hi, I'm trying to drive a FET via a micro with PWM (ST7FLITE09). I'm doing this via a 22R resistor from Port pin to gate. However when I do this the voltage from the micro drops to about 1V and won't turn on the transistor. Any ideas anyone as I am stuck???