Work it out.
Calculators
Ohm's law and power
Ohm's law
Pneumatic cylinder force
F = p · A
Three-phase motor - current and power
P = √3 · U · I · cos φ
Synchronous speed and slip
Motorteori (IEC 60034)
Power factor correction – capacitor size
Netkrav cosφ ≥ 0,9 (nordenerginet.dk)
Motor protection setting (overload relay)
IEC 60947-4-1 (motorværnsapparater)
Transformer – turns ratio
Transformerteori
Gear ratio and torque
Mekanik (gearteori)
Belt drive – speed and ratio
Mekanik/geometri
Hydraulic cylinder speed and flow
Hydraulikkens grundligning (Q = v · A)
Pneumatic air consumption per cycle
Producentdata (Festo/AutomationDirect pneumatik-grundlag)
Compressed air receiver – charging time
Kompressorteknik (standardformel)
Motor efficiency class – annual saving
IEC 60034-30-1 (IE-effektivitetsklasser)
Encoder pulse frequency
Encoderteori/geometri
Modbus RTU – telegram transmission time
Modbus RTU-specifikationen (seriel bit-timing)
Voltage drop in a motor cable
DS/HD 60364-5-52
Bent bracket
Exact flat pattern
Edge-bent panel
Exact flat pattern
Cable tray
Exact flat pattern
Tools that work in all subjects
Whatever your programme is called, these tools calculate the same — Pythagoras, area, percentages and units are not tied to one trade.
- Pythagorasa² + b² = c²Find the missing side, set out a right angle, check whether a room is square, and find the space diagonal.
- Area and perimeterm²Rectangle, triangle, trapezium, circle and composite shapes — area and perimeter.
- Volume and surface aream³ · lBox, cylinder, cone, sphere, pyramid, prism, pipe and frustum — also in litres.
- Percent%Percentage of, how many per cent, percentage change, discount and VAT.
- Scale and ratios1 : 50From drawing to reality, area and volume to scale, the rule of three and dividing in a ratio.
- Unit convertermm ↔ mFrom mm to km, Pa to bar and kB to GB — with the unit staircase.
- Time calculations and the clockt : minTime between two clock times, add time, and 1.75 h = 1 h 45 min for the timesheet.
- Slope and fall% · ° · 1:xFall from level to level, in per cent, per mille, degrees and mm per metre — and the height difference.
- Material consumption including wastem² + %Boards, paint, battens at c/c spacing and packs — for a composite surface or a whole room, with waste.