Symmetric 1a power supply k8042 illustrated assembly manual h8042ip-1 low co st unive rsal sym metric power supply.
2 features low cost universal symmetric power supply just add a suitable transformer and a heatsink ideal for e.G. Op-amp applications, amplifiers, ... Trimmers can be replaced by potmeters to allow continuous adjustment of output voltage led output indicators compact size specifications : positive ...
3 assembly hints 1. Assembly (skipping this can lead to troubles ! ) ok, so we have your attention. These hints will help you to make this project successful. Read them carefully. 1.1 make sure you have the right tools: a good quality soldering iron (25-40w) with a small tip. Wipe it often on a wet ...
4 assembly hints 1.3 soldering hints : 1- mount the component against the pcb surface and carefully solder the leads 2- make sure the solder joints are cone-shaped and shiny 3- trim excess leads as close as possible to the solder joint remove them from the tape one at a time ! Axial components are t...
5 r1 : 120 (1 - 2 - 1 - b) r2 : 120 (1 - 2 - 1 - b) r3 : 2k2 (2 - 2 - 2 - b) r4 : 2k2 (2 - 2 - 2 - b) 3. Resistors r... Construction d1 : 1n4007 d2 : 1n4007 d3 : 1n4007 d4 : 1n4007 d5 : 1n4007 d6 : 1n4007 d7 : 1n4007 d8 : 1n4007 d9 : 1n4007 d10 : 1n4007 2. Diodes. Watch the polarity ! D... Cathode j...
6 construction vr1 : lm317 vr2 : lm337 9. Voltage regulators vr... When you want to use the maximal 20w dissipation mount the optional heat sink, ordernr. : hs4003. Apply a little heat conducting paste (obtain from your specialized dealer) to one side of an insulation plate and press it with this si...
7 fit the components and heatsink onto the pcb and fix it by means of two 5mm spacers and two screws. Solder now the connections of the voltage regulators. 2 heatsink construction 3 screw spacer.
8 enclosure when mounting the kit into a enclosure, you have to drill two holes in the backside of the housing to pass the 15mm m3 bolts trough. 11. Using a metal enclosure as a heatsink heat conducting paste 15mm m3 bolt insulation plate insulation tube m3 nut.
9 12. Connection enclosure va 0 req. Output voltage req. Ac input voltage (transformer) +/- 1,2 ... 5v 2 x 9vac +/- 5 ... 9v 2 x 12 - 15vac +/- 9 ... 12v 2 x 15vac +/- 12 ... 15v 2 x 18vac +/- 15 ... 18v 2 x 22vac absolute max. Ac input : 2 x 24vac 0 vb.
10 pcb 13. Pcb layout.
11 diagram 14. Diagram.
5 4 1 0 3 2 9 3 2 7 1 3 2 modifications and typographical errors reserved © velleman nv. H8042ip’1 - 2014 (rev.2) velleman nv legen heirweg 33, b-9890 gavere belgium (europe).
