This part contains descriptions of my coilguns

 

Coilgun View Year Projectiles Stages Characteristics
EM-2 (battery powered coilgun, made in 2012) - only in Russian language

more photos here

2012 2 (MOSFET + SCR)

Projectile velocity: 20 m/s

Efficiency: 2.8%

Capacitor energy: 61J

EM-3 ("Electric bow")

more photos here

2015 6 (SCRs)

Projectile velocity: 62.5 m/s

Efficiency: 3.3%

Capacitor energy: 301J

EM-4 (experimental "bistage" coilgun)

Under construction

More photos here

2016 Under construction 12 (6x2) Under calculation