battery chargers, analog circuit design, computer memory, embedded control system software, direct current (dc) to direct current (dc) converters, digital integrated circuits (ic), direct current (dc) to alternating current (ac) inverters, computer peripheral magnets, memory chips, microprocessors, power factor correction systems, switching power supplies, power supply converters, printed circuit board (pcb) assembly, printed circuit board (pcb) design, computer validation services available from r & r electronic products, inc. based in murrysville, pa. click the links below to visit our website or contact us via our profile page.