mvs sarma
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pickt2 download
Perhaps you can check them of on DMM for identifying the leads and accordingly swap the pins of transistors. Specific care is needed for proper placement of any device.
i too assembled Nishal' PCB only
but i use 2N3904(6) and position them accordingly
if BS170 is Motorola item, it follows DGS order
24C512 is little more hungry and thus loads the USB power supply.How ever, we can mount them later also.
connect a 1K resistor and diode in series to power supply in the forward dirction, the diode should develop a drop of approximately 0.25V
DMM forward check in diode range would show less that 1/3rd of what 1N4148 shows. Thus to check for a schottky diode is not difficult.
you need to use a box type capacitor or at the worst a disc cap and not electrolytic.
In the attached ppcb has the U5P FET underneath, thus invisible from top.
Perhaps you can check them of on DMM for identifying the leads and accordingly swap the pins of transistors. Specific care is needed for proper placement of any device.
i too assembled Nishal' PCB only
but i use 2N3904(6) and position them accordingly
if BS170 is Motorola item, it follows DGS order
24C512 is little more hungry and thus loads the USB power supply.How ever, we can mount them later also.
connect a 1K resistor and diode in series to power supply in the forward dirction, the diode should develop a drop of approximately 0.25V
DMM forward check in diode range would show less that 1/3rd of what 1N4148 shows. Thus to check for a schottky diode is not difficult.
you need to use a box type capacitor or at the worst a disc cap and not electrolytic.
In the attached ppcb has the U5P FET underneath, thus invisible from top.