Encrypted Email vs Electronics Toolbox

Proton Mail is the encrypted email app trusted by over 100 million people. Get a secure, private email address protected by end-to-end encryption, with no ads, no AI training and no inbox scanning. Based in Switzerland and protected by some of the world's strictest privacy laws. Your inbox, your rules. Why choose Proton Mail for secure email • Free encrypted email: create a free @proton.me or @protonmail.com email address • Password-protected emails: send encrypted emails to anyone, even people who don't use Proton • Spam, phishing and tracker protection: with built-in spam filters, phishing alerts and email tracker blocking • Organize your inbox: with folders, labels and simple swipe gestures • Offline mode: read, write and organize emails offline, and everything syncs when you're back online • Private categories: keep important emails in focus with automatic, private categories • Multiple accounts: switch between multiple Proton Mail accounts in one secure email app • Get up to 1 GB of free email storage, or up to 15 GB with Mail Plus Secure email with encryption Everything in your inbox is stored with zero-access and end-to-end encryption, emails between Proton users can only be read by you and your recipient. Proton Mail can't read or scan your messages. Our open-source apps use OpenPGP encryption and are independently audited. A private alternative to temp mail Need a temp mail address for a sign-up? Create up to 10 free hide-my-email aliases on the web. They forward to your inbox, keep your real email address private, and can be disabled or deleted at any time. Switch to secure email Easy Switch moves your email to your new secure inbox with no manual exporting or importing. Connect Gmail to use your Gmail address alongside your Proton email in one secure inbox, or set up auto-forwarding from as many Gmail accounts as you like. The Wall Street Journal: "Proton Mail offers encrypted email, which makes it virtually impossible for anyone to read it except the sender and the recipient." How can Proton Mail be free? We believe everyone deserves private email. Free accounts are funded by our community of paid subscribers. Upgrade for more email storage, more addresses and custom domains. Follow Proton for the latest news and offers: Facebook: /proton X: @protonprivacy Reddit: /protonmail Instagram: /protonprivacy Learn more: https://proton.me/mail Our open-source code: https://github.com/ProtonMail

Electronics Toolbox is your go-to app for quick, reliable electronics calculations.
What sets it apart? Most of the included calculators can instantly generate LTspice test circuits and components—so you can validate results right away and drop subcircuits directly into your own designs. Main features: * Ohm’s Law, dB, V Peak / V RMS * Resistors (parallel, color code, best combination) * Voltage Dividers (with LTspice test circuits) * LED Resistor, Capacitors in Series, Capacitance Converter * RC & RL Time Constants (with LTspice test circuits) * Op-Amp circuits (inverting, non-inverting, difference, Howland) (with LTspice test circuits) * Instrumentation Op-Amp circuit (with LTspice test circuit) * Filters: RC / RL / RLC Low-Pass, High-Pass, Band-Pass, Band-Stop (with LTspice test circuits) * NE555, LM317, Wheatstone Bridge (with LTspice test circuits) * Common Emitter BJT amplifier (with LTspice test circuit) * Junction temperature and heatsink calculations * AWG Conversion Whether you’re a student, hobbyist, or professional, Electronics Toolbox makes design work faster, easier, and more accurate. Not endorsed or sponsored by Analog Devices.