Tags » Amplifier

Headphone Protection V2.1

Today I would like to show You my protection circuit.

This circuit is designed to do few functions:

– delay at startup – few seconds set by RC… 43 more words

Audio Tunning

TPA6120 + LT1028 for HeadFun

Next amplifier for HeadFun is based on TPA6120 TI current feedback, high current, operational amplifier + Linear LT1028 for input buffer/voltage amplification. TPA6120 needs input buffer on non-inverting input due to ~6uA of current sourcing from this pin.

Audio Tunning

How To Tell If You're Installing Foil Capacitors Backwards

It only takes one mistake to realize electrolytic capacitors have a polarity, but if you’re working with old tube gear, tube amps, or any old equipment with those old orange dip, brown dip, or green dip foil capacitors… 234 more words

Classic Hacks

HDP01 Discrete for HeadFun

Design based on corrected and improved schematic originaly posted by Knut Harald Nygaard on his home page:


but now project is unavailable, maybe cause of instability of original design. 136 more words


New 3-Channel Piezo Controller from Elliot Scientific

The all new E1100 Piezo Controller is an open loop, three channel amplifier suitable for driving low voltage (up to 150 V) piezo actuators and stacks. 88 more words

Fibre & Telecom

Replacing speaker selector lamp in Onkyo Integra M-506RS amplifier

My latest addition to the stereo system, an Onkyo Integra M-506RS amplifier, had a speaker # 1 bulb out. After removing top and bottom panels, additional four screws hold the front panel. 292 more words