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7 Reviews
These transformers are good for crystal radios!
I use these transformers as matching units in home made crystal sets. One can transform as much as 40K ohms down to 8 ohms with these units and many other impedance combinations in between. They work very well when using a real 1N34 detector diode. And the secret to great volume is the use of sound powered headphones and of course hiqh quality variable capacitor with heavy litz wire in the tuned circuit. Also, don't forget a high antenna at least 75 feet long and a ground connection with a minimum of two paralleled 8 foot ground rods. Great fun to hear WSM in Nashville TN from here in NH! - billsalemnhRead full review...
Verified purchase: Yes | Condition: new | Sold by: aps-controls
It provides for the optional imoedence matching necessary to get the optimum yield out of rectivied signals for my crystal sets and other receivers.
It is the perfect size for many of my applications, and it works superbly. Great value for the cost.
Verified purchase: Yes | Condition: pre-owned | Sold by: rosemarie75
Flexible impedance matching transformer
This is a good transformer for some development work we are doing. It give us a wide range of impedance matching for the circuit we are evaluating.
Verified purchase: Yes | Condition: new | Sold by: beachaudio
Looks good
I received the transformer and meter checking it looks good. I have not used in circuit yet but I don't expect any problems.
Delivery was on time as expected.
Verified purchase: Yes | Condition: new | Sold by: ecop!
Crystal Radio Builder's Must-Have
This transformer belongs in every crystal radio builder's parts box. It will match your detector's output impedance to almost any headset.
Verified purchase: Yes | Condition: new | Sold by: nowstore
A crystal radio builders best friend
Great for crystal radio impedance matching to your earphone. Gets you a little more volume.
Verified purchase: Yes | Condition: new | Sold by: ecop!
Good Value
It works for what I bought it for
Verified purchase: Yes | Condition: new | Sold by: beachaudio