Electronics docs & calculators vs 555 Timer & Oscillators Pro

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

Master the design of oscillators and waveform generators using 555 timer integrated circuits, digital logic integrated circuits, operational amplifiers, and transistors. The application provides a comprehensive collection of over 130 tutorials and circuit diagrams, covering 555 timer circuits and practical applications, CMOS 4000 series logic oscillators, TTL 74LS and 74HC series oscillators, operational amplifier–based waveform generators, and transistor multivibrators. Designed for electronics beginners, students, hobbyists, and professional engineers, the app serves as a complete reference and learning tool for designing, understanding, and building oscillators, multivibrators, pulse generators, and waveform circuits commonly used in both analog and digital electronics. In addition to tutorials and schematics, the app includes built-in calculators for frequency, timing, duty cycle, and component value estimation, helping users quickly calculate and adjust circuit parameters. All topics are presented with clear circuit diagrams and detailed explanations. Available in 14 Languages: • English, French, German, Indonesian, Italian, Japanese, Polish, Portuguese, Russian, Simplified Chinese, Spanish, Turkish, Ukrainian, and Vietnamese — study in your native language! Covered Topics: • 555 Timer IC Series • Astable, monostable, and bistable modes • Pulse Width Modulation (PWM) • Voltage conversion circuits • Sensor and external module interfacing • CMOS Logic Oscillators • CMOS 4000 series circuits • Astable, monostable, and bistable modes • Gated CMOS oscillators • TTL / HC Logic Oscillators • TTL 74LS series circuits • 74HC series logic oscillators • Astable and monostable modes • Operational Amplifier Oscillators • Sine wave generators • Square-wave pulse generators • Triangle wave generators • Transistor-Based Oscillators • Transistor-Based Astable multivibrators • Transistor-Based Monostable multivibrators The Pro edition provides additional tools for faster learning and easy navigation: • Full-text search across all lessons and components • Favorites for saving and organizing important topics The content is regularly updated and expanded with each new release, ensuring the latest tutorials and circuit examples are always available.