Vermes
Advanced Member level 4
![](https://obrazki.elektroda.pl/100_1271429383_thumb.jpg)
- The measured power of the tip: 2x350W with 8 ohms resistance
- Transformers: 1.5kW with 2x60VAC
- Main filtration: 12x6800uF on 100V
- Tips: 5 pairs of irfp240/9240
- Cooling: tunneling on each channel
- Wires to fund the tips: 6mm shielded.
The device has active lowpass filters built on TL072 on each channel and subsonic 37Hz-3dB, also built on TL072.
Protection:
- short-circuit protection
- overload protection
- DC on output protection realized on 2 transistors and optotriacs
- silent start made on time relays
- soft start
- thermal protection with smooth rpm adjustment build on two sensors, one bimetallic isolating the outputs above 95 degrees, and one thermistor to adjust rpm's
The amplifier weights 25kg.
![](https://obrazki.elektroda.pl/67_1271436719_thumb.jpg)
![](https://obrazki.elektroda.pl/71_1271436843_thumb.jpg)
![](https://obrazki.elektroda.pl/46_1271436956_thumb.jpg)
![](https://obrazki.elektroda.pl/43_1271437085_thumb.jpg)
Link to original thread – Wzmacniacz estradowy z pełnymi zabezpieczeniami