I am a keen slot car enthsiast, currently running a Carrera track powered by two regulated 13,8 volt DC power supplies rated at 20 Amps each (one for each lane).I also managed to obtain another two of these power supplies, but only rated at 7 Amps each.
My idea is to run both the 20 Amp and 7 Amp powersupplies on each lane in order to be able to get the maximum current as well as the maximum voltage from these supplies.I would also like to make both current and voltage to the track , adjustable and to include a digital readout for both current and voltage in order to monitor what current and voltage is dialed in.
On a slot car site I came across an article where the writer recommends including a bank of 110000 mF capacitors of 35VDC (two per power supply) as well as a 30 Amp diode in each circuit.To quote the author "adding a large capacitor downstream of the power supply will minimize noise (AC ripple),help regulate voltage and massively increase surge".
As a newbie to the world of electronics I would appreciate any help/advice/diagrams in how to execute my idea and also any comments on the use of the aforementioned capacitors and diodes in the circuit.
BTW 110000uF 35 vDC capacitors do not seem to be that readily available and if they are,they are very pricy!
Thanks for any help!