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power supply filtering

Noise filtering in power supplies is essential for ensuring clean and stable power delivery to electronic devices. Power supplies convert input voltage (AC or DC) into regulated output voltage suitable for the connected devices. However, the power grid and other sources can introduce various types of noise or disturbances into the electrical signal, which can interfere with the proper functioning… Read More »power supply filtering

A brief history of hawaiian guitar

    The Hawaiian guitar, also known as the steel guitar, has a rich and varied history that spans several centuries. The origins of the Hawaiian guitar can be traced back to the early 19th century, when Spanish and Mexican cowboys, known as vaqueros, brought their guitars to Hawaii. These early guitars were played in the traditional Spanish style, with the guitar… Read More »A brief history of hawaiian guitar

    how to estimate li-ion battery life

    Lithium-ion batteries are widely used in a variety of devices such as smartphones, laptops, electric vehicles and audio equipment. These batteries have a relatively long life compared to other types of batteries, but their performance can degrade over time. In this article, we will discuss how to calculate the life of a lithium-ion battery and what factors can affect its… Read More »how to estimate li-ion battery life

    Understanding Expression Pedals

    Expression pedals are used to control variable parameters on electronic music equipment such as digital amplifiers, rack effects, stomp boxes, MIDI controllers, and keyboards. The pedals do not contribute to the sound themselves, but remotely control aspects of the device they are connected to. It might help to think of an expression pedal as a remote knob that can be… Read More »Understanding Expression Pedals

    What is a TRS Cable?

    Pro-Audio devices sometimes call for TRS cables. What are these, and why do they frequently cause confusion? Let’s find out. The letters TRS stand for Tip, Ring, and Sleeve, and refer to the parts of the jack plug that the different conductors are connected to. A TRS cable has three conductors vs the two on a standard guitar cable. A… Read More »What is a TRS Cable?

    Volume Pedal Q&A

    Volume pedals may not be as simple as they seem. In this article we cover some of the common questions and answers about using volume pedals with guitars and other instruments.  Q: What is the difference between active and passive volume pedals? The difference between these two can cause confusion due a difference in whether we really mean active or passive volume pedals or are… Read More »Volume Pedal Q&A

    Pedal Current Draw is a Lie

      Guitar pedals, and other DC powered devices that we use in our rigs often reference a current draw number. Your delay pedal may say something like, ‘9VDC 300mA center pin negative’ We’ve covered voltage and polarity here before and they are straightforward concepts, but that mA number printed on the side next to the power jack: Well, it’s wrong. OK,… Read More »Pedal Current Draw is a Lie

      Where To Put Your Volume Pedal

      The most obvious, and probably most common ordering for a volume pedal in the signal chain is simply to put it first: Take the cable from your instrument and connect it directly to the input of the volume pedal. Everything else comes after that. In this scenario, the volume pedal behaves very much like the volume control on your instrument… Read More »Where To Put Your Volume Pedal