Author: raabnits

Asked a question
ZVS buck converter in TCM or CRM

I would like to simulate the ZVS Synchronous rectification buck converter, I know if I operate in ZVS I need to change the switching frequency of the buck converter, and I have some questions I want to...

May 13, 2021 2
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CMOS AND Circuit calculate power consumption

I need to calculate the power consumption of the CMOS AND circuit and I tried to figure it out myself but I really don't have a clue. I don't need the full answer but a first step into the right direction...

May 13, 2021 2
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High Power LED Circuit Design & Constant Current Source Question/Feedback

I'm trying to design a dimmable LED circuit board. It's controlled by Arduino with its PWM signals. I'm new to electronics so I have some question regarding my design and knowledge on it. I've attached...

May 13, 2021 2
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Why was it chosen to adjust difficulty every 2 weeks (rather than 2 days or every few blocks)?

Is there a benefit to adjusting the difficulty every so often (ie 2 weeks) vs adjusting the difficulty every block?

May 13, 2021 2
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Practical application of Electrum's Encrypt/Decrypt message feature?

It's pretty clear how signing a message with a Bitcoin key can be useful in proving ownership of funds. However, it's far from clear how encrypting a message with a Bitcoin key can do anything useful....

May 13, 2021 2
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How do i program a 32-bit avr microcontroller? [closed]

Apologies for the stupid question. I wqnt to get into embedded computing and electronics, and I was looking at buying some microcontrollers. Specifically, i was looking at 32-bit avr ones, e.g.https://uk.farnell.com/microchip/at32uc3a0256-alut/mcu-32bit-avr32-66mhz-lqfp-144/dp/1841635?st=avr...

May 13, 2021 2
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How to switch a 700A 200V pulse for a coilgun?

I'm working on a coilgun and I need to discharge a capacitor bank through a coil to create a strong magnetic field. My coil has a resistance of 266 milliohms and when fully charged, the capacitors are...

May 13, 2021 2
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Are a Ripple Gateway's fees available via the rippled API? [closed]

Ripple Gateway lists in the following locations show fees but I was wondering if it's possible retrieve fee information from a rippled server API. A number of the fees webpage links are no longer operational...

May 13, 2021 2
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Restoring from old paper Mycelium Wallet Backup

I have an old Mycelium Wallet Backup on paper, created July 2014, Mycelium Wallet 1.2.12., Backup Format Mycelium Backup 1.0. It used a 15-character password + checksum character, which I have. It also...

May 13, 2021 2
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Did pools verify constantly the ouput of createrawtransaction when they build their coinbase transaction?

Pools creates their own coinbase transaction to pay their selves, and they begin the PoW by hashing different Headers, what prevent a hacker from changing the createrawtransaction with different output...

May 13, 2021 2
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Bitcoin Transaction Fees When Buying and Selling

After dipping my toes in the water with Bitcoin, turning £ into BTC, I immediately noticed around a 10% loss through transaction fees. This seems high firstly. Is this normal? Secondly, with the rate...

May 13, 2021 2
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Minimum for sending BTC from BTC wallet

Is there a particular minimal amount of Bitcoin one is allowed to send under which it is too low to be confirmed as a valid transaction from the bitcoin wallet? For instance, I have got approx. 85 Euros...

May 13, 2021 2
Asked a question
Why was it chosen to adjust difficulty every 2 weeks (rather than 2 days or every few blocks)?

Is there a benefit to adjusting the difficulty every so often (ie 2 weeks) vs adjusting the difficulty every block?

May 13, 2021 2
Asked a question
Restoring from old paper Mycelium Wallet Backup

I have an old Mycelium Wallet Backup on paper, created July 2014, Mycelium Wallet 1.2.12., Backup Format Mycelium Backup 1.0. It used a 15-character password + checksum character, which I have. It also...

May 13, 2021 2
Asked a question
Is there a Postman Collection for the rippled server API? [closed]

The rippled server has a JSON-RPC API which can be called via HTTP. Is there a Postman Collection for this API? The documentation mentions that Postman can be used, but I haven't found a collection yet....

May 13, 2021 2
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IS THERE AN APP FOR LOCAL BITCOINS? [closed]

so as Coinbase have their official app available for an easy and convenient checkout and real trading the cryptos, is there an app for local bitcoins site. If there is then someone provide a link and if...

May 13, 2021 2
Asked a question
Did pools verify constantly the ouput of createrawtransaction when they build their coinbase transaction?

Pools creates their own coinbase transaction to pay their selves, and they begin the PoW by hashing different Headers, what prevent a hacker from changing the createrawtransaction with different output...

May 13, 2021 2
Asked a question
Reusing bitcoin hw wallet infrastructure as a PGP replacement?

A lot of people who own Bitcoin are already know how to securely generate, store and use their BIP32 + BIP39 wallets, and own hardware wallets. Are there any existing projects/standards trying to bolt...

May 13, 2021 2
Asked a question
Using Javascript, I want to generate a segwit private key (zprv) similarly to how I am generating my legacy base58 extended private key. How?

let bip32 = require('bip32'); let bip39 = require('bip39'); let { bech32, bech32m } = require('bech32') const seed = bip39.mnemonicToSeedSync('rural catch say tooth tell soul road pilot fee board...

May 13, 2021 2
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boost propagation speed

Is there a way to boost propagation? E.g if someone sent me an amount, he says that he sees the txid in blockchain because he is connected to faster nodes, and I search this txid and I see it doesn't exist,...

May 13, 2021 2
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