Trickle charger - mod

257

03:52:43

Trickle charger.
Looking at the circuit you see a 2n3055 transistor handle the output, on the base is a 15v lm7815 positive regulator. In this configuration a very small relay can be used and will last forever due to the low current needs of the transistor base. Also the small relay is much less noise from on to off state, and less current is needed to operate.

The trouble shooting for this device is easy, one of two component will fail, the transformer or the transistor on the output and both are cheap and easy to replace.

The 500mf cap simulate a battery being charged and the lamp loads the battery to show the range of charge min to max.
Change the 20ohm resistor to change the charge current.

published 9 years ago

hurz

9 years ago

Trouble shooting by YRA made easy. Just trash this bullshit, problem solved!

BillyT

9 years ago

By the light bulb voltage it is a charger for a 12V led acid battery, by changing the potentiometer and feedback resistor to 1k it will make it easier to adjust the settings.

Robert_Kidd

9 years ago

Idiot Hurz awakes to spread his hate!

yra

9 years ago

Thanks bill i appreciate the information, and your right it's a lead acid charger i copied & built from some 1970 book in my collection and mod the design a few days ago to limit the click noise with a small modern relay we use on many control boards.

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