MockUp
- Re-purpose an old Dolphin torchby ROBERT BROWNContinuing on with our maker theme, member Chris being a dedicated hobbyist, has decided to rejuvenate an old Dolphin torch to use re-chargeable batteries that can be conveniently topped up from a USB charger. He used two 18650 lithium-ion batteries… Continue Reading…
- (no title)by ROBERT BROWNTHERMAL DESIGN BASICS Circuit 7805 regulator supplied by a 12V battery (allow for 14V MAX during charging) Max voltage drop across the regulator = 14-5 = 7Volts For a design load current of .5 Amp Max regulator dissipation =… Continue Reading…
- (no title)by ROBERT BROWNMember John Macey put together some basic electrical/electronic formulas which may be useful to newcomers. Thanks John.
