## Detailed calculations of parallel plate capacitor

Author: Radoje Jankovic Here I am given one detailed design, derivation formulas and calclulation of parallel plate capacitor. Author’s original work.

## KONDENZATORI ZA STARTOVANJE ELEKTRO MOTORA

Text: Radoje Jankovic. Photos: Petar Šumić. KONDENZATORI ZA STARTOVANJE ELEKTRO MOTORA Ovako izgleda kondenzator za start elektro motora od 120 mikro farada, rasklopljen kada je stradao. Na žalost ovo je čista pojava kod kineskih i još nekih proizvođača elektrolitskih kondenzatora. Ljudi rasklapaju ove velike kondenzatore da bi pokazali da se unutra nalaze manji kondenzatori. Takođe, […]

## Examples of graphic symbols in practice

Author: Radoje Jankovic Examples of graphic symbols in practice Rotating power slip rings Three-line graphical symbol (a) and single-line scheme (b) of rotating sliding rings or power slip-rings. The number of sliding rings in one assembly ranges from 3 and even more than 20. Three photos show this device in practice. Drawing and photographs: Radoje […]

## Sensors – 2

Edited by: Radoje Jankovic LIST OF ALL SENSORS BY GROUPS (A) Acoustic, sound, vibration 1. Geophone 2. Hydrophone 3. Lace Sensor a guitar pickup 4. Microphone (B) Automotive, transportation 1. Air flow meter 2. Air–fuel ratio meter 3. Blind spot monitor 4. Crankshaft position sensor, A crank sensor is an electronic device used in an […]

## Coils, Calculation the active (ohmic) resistance of coil

Author: Radoje Jankovic For the given dimensions of this or similar coil we need to calculate the resistance of coil. Here are: dw – diameter of wire without insulation, in mm. dm – average diameter of coil (50 mm in this case) l – total length of wire… in meters rho – specific resistance of […]