Electrohelper is carefully designed to address the need for electronic engineers and electronics hobbyists in designing an electronic circuit.



The app contains the electronic components reference section, electronics circuit reference section, and electronics circuit calculation section. 

 Tedious electronic circuit calculation such as Butterworth, Sallen-Key, Chebychev, and Bessel filter is made easier with the app.



The App features are:

Electronic components section:- 


 
 

 
 Resistor 
 

 
 Capacitor 
 

 
 Inductor 
 

 
 Transient voltage suppressor(TVS) 
 

 
 Rectifier diode 
 

 
 Signal diode 
 

 
 Zener diode 
 

 
 Bipolar junction transistor(BJT) 
 

 
 Metal oxide field effect transistor(MOSFET) 
 

 
 555 timer 
 

 
 Operational amplifier (Op-amp) 
 

 
 Arduino boards (arduino uno and arduino nano) 
 

 
 Atmega 328 
 

 
 Voltage regulator integrated circuit(IC) 
 

 
 Multiplexers 
 

 
 Demultiplexers 
 

 
 Encoders 
 

 
Decoders 
 

 
 Flip-flops
 

 
 Counters 
 

 
 Shift registers
 



 Electronics circuit section:- 


 
 

 
 Class A amplifier circuit 
 

 
 Class B amplifier circuit
 

 
 Class AB amplifier circuit
 

 
 Relaxation oscillators circuit 
 

 
 Sinusoidal oscillators circuit 
 

 
 Resistor-Capacitor filter (RC filter) circuit
 

 
 Inductor-Capacitor filter (LC filter) 
 

 
 Active rectifier circuit
 

 
 Bridge rectifier circuit
 
and many more
 



 Electronics calculator section:-



 

 
 NE555 timer Astable multivibrator 
 

 
 NE555 timer monostable multivibrator 
 

 
 Bipolar junction transistor (BJT) analysos 
 

 
 Inductor winding 
 

 
 Toroidal inductor winding 
 

 
 Transformer winding 
 

 
 Butterworth, Bessel, Chebychev passive filter calculator 
 

 
 Sallen - Key active filter calculator 
 

 
 Inverting, noninverting and difference operational amplifier calculator
 

 
 Resistor in series calculator 
 

 
 Resistor in parallel calculator
 

 
 Capacitor in series calculator 
 

 
 Capacitor in parallel calculator
 

 
 Capacitance of a capacitor calculator 
 

 
 Resistance calculator 
 

 
 Series LRC circuit impedance and reactance calculator 
 

 
 Parallel LRC circuit impedance and reactance 
 

 
 Charging and discharging a capacitor 
 

 
 Charging and discharging an inductor 
 

 
 Polyester film capacitor code 
 

 
 Ceramic capacitor code 
 

 
 Resistor color code 
 

 
 Air core inductor 
 

 
 Voltage divider
 

 
 Current divider
 

 
 Ohms law (current, voltage and resistance relation in a circuit) 
 

 
 Delta to star resistor network conversion 
 

 
 Star to delta resistor network conversion 
 

 
 Light emitting diode (LED) resistor calculator 
 

 
 Double pole Sallen - Key 
 

 
 Butterworth filter components value calculator
 

 
 Surface mounted (SMD) resistor code calculator 
 

 
 Pi, Tee and Bridge attenuator 
 

 
 Radio frequency(RF) calculator 
 

 
 Alternating current (AC) power 
 

 
 Direct current(DC) power 
 

Bug Fixes