2N2222A NPN transistor as Current Amplifier

[erashish14]

Hi All,

I'm using 0.9V to 5V DC DC booster module with Female USB module as output, now when I'm connecting +ive(5V) of USB module with base of 2N2222A NPN transistor via 500 ohm resistor & -ive to emitter, also +ive of Load with collector of transistor & -ive of Load to emitter of transistor & trying to use transistor as current amplifier but I'm not getting any output while checking with multimeter,
Kindly suggest if there is any changes in connection required, to make transistor works as a current booster

 

[Papabravo]

Words are failing you. Schematic diagram please.

 

[Lightium]

Your abbreviations are fictitious and only proper schematics are the language of electronics around these parts.

 

[aliarifat794]

Check all of your connections. There may be a loose connection or short circuit.

 

[Pommie]

Where is the 0.9V coming from, what amperage is available at 0.9V. What current does the relay require?

Mike.