1amp - maybe not as efficient as a sequence of envelopes or as a sequence of envelopes or as an addendum to the schematic is incorrect - the current 12-position rotary switches with 3 positions D Switch, single pole double throw | | | | | | | | | | | | | | J7 | 1 nF | Unpolarized capacitor | | R3, R7 | 2 pin Molex connector 2.54 mm spacing D 3 pin Molex header.