Machine construction idea 151025 xxxxxxxxxxxxxxxxxxxxxxxxx Speed control is designed for slow, heavy stitching the sheep leathers and for drive the gear cutting oil pump of the metal-cutting machines. Commutator motor is from a washing machine with a sufficiently large coals Half-controlled bridge used - see the version V1 and V2 Regulation wiring is a classic, old, experienced Galvanic isolation power part from non-power part of regulator Galvanic separation of the engine hanger on the the machine chassis LC filter in the supply line Protection IC if failure the power section : burn only one rezistor Capacitor 1M / 250Vst instead of hot precipitating resistance 22K / 10W used Protection diodes everywhere Ignition transformers replaced with the modern optocouplers Thyristrs 800V/3A/100mA (KT260 switch occasionally over knee) Zero (flyback,snubber,clamp) diode: rather fast, as big as Engine likes uninterrupted current - use additional serial inductance for it Transistors: 30V/0.1A for general consumption Operational amplifiers : 4 in one IO, will never stop produce Stabilizer 7912 has not the same pins as 7812! PCB is halfuniversal (its size is poorly estimated) Speed sensor: signal prefer not to lead together with the power wires, alternatively can be used the stepping motor from any printer or from old washing machine programator ------------------------------ Translated by Google traslator