This popular power supply uses an L7812 voltage regulator IC together with bridge rectifier section and smoothing capacitors to provide a stabilised and regulated 12Vdc output of up to 500mA. Power-On LED indicator.
Ideal for powering many of the electronic kits that we sell or any other application where you need a stabilised 12Vdc supply.
As supplied without heatsink it is quite safe to draw 500mA continuously. This is a very conservative current rating as the circuit is capable of delivering 1 to 1.5A if the regulator IC is fitted with a suitable heatsink (e.g. Order Code HS-TO220 for loads of up to 1 Amp) and properly cooled. You would also need to uprate the input transformer accordingly.
Board requires a 12Vac, 0.5A minimum transformer for standard operation (not included).Features
|Supply||12Vac, 0.5A transformer (not supplied)|
|Maximum input voltage||24Vac / 35Vdc (see L78xx datasheet for detailed info)|
|Output Voltage||12V dc fixed|
|Output Current||0.5 Amps as supplied|
|Board Dimensions||35 x 75 x 25mm|
|Board Connections||Solder pads or posts @ 5.08mm centres|
|Product Formats||SELF-ASSEMBLY Electronic Kit (KT) or|
PRE-ASSEMBLED Electronic Module (AS) Product Formats Info