Hi,
Anyone has experience with Indel toroidal transformers? Are they any good? No buzzing?
I need a pair of 300VA 30-0-30V and these are very unexpensive - to good to be true? http://www.tme.eu/en/details/tst300w_2x30v/toroidal-transformers/indel/tst300016/
What about these from Talema? 55174-P1S2 TALEMA - Transformer: toroidal | TME - Electronic components
Should I buy any of these?
Thank you.
Anyone has experience with Indel toroidal transformers? Are they any good? No buzzing?
I need a pair of 300VA 30-0-30V and these are very unexpensive - to good to be true? http://www.tme.eu/en/details/tst300w_2x30v/toroidal-transformers/indel/tst300016/
What about these from Talema? 55174-P1S2 TALEMA - Transformer: toroidal | TME - Electronic components
Should I buy any of these?
Thank you.
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hello,
I've used INDEL power transformers in my diy amps.
Some comments:
no problems with buzz or hum when primary/mains rated voltage not exceeded.
my DIY F5 with 600VA indel buzzed once when i was in business trip for a long time abroad (where mains voltage can be higher then 230 V-240V) when I brought it home everything was ok again.
Core material seems not as good as the audio grade transformer core - but you know price of audio transformer. 600VA needs soft start (without - will trigger household switchboard fuses/protection) or at least therimstor (if class A) .
One of my amps 800VA audio grade transformer turns on without any surge without soft start. 300-450 VA should be fine IMHO without any soft start.
one of INDEL transformer had little asymmetry in the secondary voltages , but only one of all I've used (more than 12 pcs).
the mounting bracket is pretty rough with small diameter hole for screw (can be fixed with drill and i usually sand it and then paint with spray paint) and it have rubber gaskets for insulating/ reduction of vibration.
in pictures - 600VA and 2x 200VA
I've used INDEL power transformers in my diy amps.
Some comments:
no problems with buzz or hum when primary/mains rated voltage not exceeded.
my DIY F5 with 600VA indel buzzed once when i was in business trip for a long time abroad (where mains voltage can be higher then 230 V-240V) when I brought it home everything was ok again.
Core material seems not as good as the audio grade transformer core - but you know price of audio transformer. 600VA needs soft start (without - will trigger household switchboard fuses/protection) or at least therimstor (if class A) .
One of my amps 800VA audio grade transformer turns on without any surge without soft start. 300-450 VA should be fine IMHO without any soft start.
one of INDEL transformer had little asymmetry in the secondary voltages , but only one of all I've used (more than 12 pcs).
the mounting bracket is pretty rough with small diameter hole for screw (can be fixed with drill and i usually sand it and then paint with spray paint) and it have rubber gaskets for insulating/ reduction of vibration.
in pictures - 600VA and 2x 200VA
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