DIY 2.5v limit plate cars start capacitor protection board parts
Car starts with a super capacitor generally consists of six components 15v start module, generally more than 2.7v super capacitor will make electrolyte leakage, resulting in damage to the capacitor. Each is equipped with a protective plate capacitor, can effectively protect each section capacitor voltage does not exceed the limit.
I. High-precision voltage regulator IC basis, for the default regulator 2.5v ± 50mV (you can adjust R4, R5 resistance adjustment pressure limiting size)
Two high-power switch, three 2010 chip resistors in parallel into a 0.4 ohm resistor shunt currents up to 5A (considering heat problems, sustained pressure limiting current should not exceed 1A).
Three. Protective plate of two sizes:
(1) diameter 35mm, mounting hole diameter 5.8mm, two-hole center distance 12.5mm, pad diameter 10mm. (In line 600 ---- 700F super capacitor specifications)
(2) diameter 40mm, mounting hole diameter 6mm, two-hole center distance 17mm, pad diameter 12mm. (1400F 2000F ultra capacitor meet specifications)
Four: power tube and back large copper resistance, improved heat dissipation, more stable operation.
Hint: start within the car super capacitor bank voltage 15v can be achieved, although the battery voltage is 12v, but the vehicle has been launched after the battery charge when the battery voltage is higher than 14v, (say six 2.5v restriction plate can reach 15v, 2.2v limit plate will need 7 would be appropriate)
1 set DIY 2.5v limit plate cars start capacitor protection board parts
431 is the Q1
2TY is the IC
R1 small resistor
R5 as is
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