CB Foorum

Toiteplokk 5A [img:609:346]http://users.otenet.gr/~ahisrod/circuits/power_supply_13_8V_with_LM338/power_supply_13_8V_with_LM338_1.gif[/img][img:511:360]http://users.otenet.gr/~ahisrod/circuits/power_supply_13_8V_with_LM338/power_supply_13_8V_with_LM338_2.gif[/img][img:542:385]http://users.otenet.gr/~ahisrod/circuits/power_supply_13_8V_with_LM338/power_supply_13_8V_with_LM338_3.jpg[/img]R1=270R 1/4W 2%
C4-5=10uF 25V
T1=220Vac/15VAC - 8A Mains Transformer
TR1=4k7 (Multiturn)
D1-2=1N4002 (1A/100V)
S1=2 Pole Single Throw Mains Switch
C1=10000uF 40V
B1=25A Bridge Rectifier F1=250mA Fuse
C2-3=100 nF 100V Polyester


Teine varjant 1,2V-25V 5A

[img:400:336]http://digilander.libero.it/nick47/vrg201.gif[/img][img:600:378]http://digilander.libero.it/nick47/vrg202.gif[/img]

LM388

[img:204:206]http://digilander.libero.it/nick47/vrg204.gif[/img][img:137:302]http://digilander.libero.it/nick47/vrg205.gif[/img]

Dioodsild

[img:298:172]http://i169.photobucket.com/albums/u209/zs1i/BRIDGE1.jpg[/img][img:295:300]http://i169.photobucket.com/albums/u209/zs1i/590px-Bridge_rectifiers.jpg[/img]

Veel üks skeem igaks juhuks

[img:640:265]http://i169.photobucket.com/albums/u209/zs1i/FIGURE1.jpg[/img]

Jahutus peab muidugi olema tasemel, sest LM338-l on loll komme kuumaks minna. Küttevõimsus on (Vin-Vout)xIout, nii et kui 5A sinna järgi susata, siis 10V pingete vahe korral oleks jahutada 50W.
Muidu abiks skeemid.

73
Kalev