1N34A Datasheet, 1N34A Germanium Diode Datasheet, buy 1N34A Diode. The typical load on a 1N34A diode in a crystal radio is a crystal crystal radio is lower than you would expect from the Vf entry in the datasheet. 1N34A Germanium Diode, Package: DO Can be used in many AM, FM and TV-IF applications, replacing point contact devices.. Applications. TV audio.

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How well it will do anything else is anybody’s guess. Thanks again for your replies.

Germanium Diode 1N34A

Once you have a working receiver, you can try using the piezo buzzer and see what it does and how it changes things – but that is an experiment for AFTER you have a working receiver. Also worth noting is that Vf is dependent on temperature. Post Your Answer Discard By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies. Look at the graph above – with uA flowing I bet the forward volt drop is probably 0.


I think that “a piezo buzzer” today isn’t comparable to a crystal earpiece. Get it working right, first, though.

1N34A – 1N34A Germanium Diode Datasheet

Andy aka k 10 MichaelK 4 It lists Vf as 1V at 5mA It’s never this black or white: Use a proper crystal radio earphone! Sign up using Email and Password. It may work well, it may not.

I guess it didn’t help that I tested this radio outside in -5 degrees Celsius. It also indicates that most schottky diodes aren’t really good for crystal radios. A piezo buzzer is meant to BUZZ at a particular frequency. Email Required, but never shown.

It may well be the diode that 1n3a causing problems. The 1N34A will conduct 0. The 1N34A conducts much smaller currents with a lower Vf. Back when I was younger I got a crystal radio set kit which included a 1N34A Ge diode as far as I can remember, I don’t have it anymore.

You need the crystal earphone to avoid loading the tuning circuit and to keep the Vf low enough for the diode to demodulate the signal.

1N34A Datasheet

Try locating an actual datashedt earpiece and give it a go. As you can see from this diagram from here, The 1N34A will conduct 0. Post as a guest Name.


It is completely possible that another part of my circuit is to blame, I just want to rule out the diode. In reponse to comment: According to that site, you will need a bias current for most schottky diodes to get good performance.

Germanium Diode 1N34A

Thank you for your answer and the clarification about why I need a low Vf and crystal earpiece. I heard no sound from it through a piezo buzzer pressed against my ear and figured it was maybe because of the diode, so I looked datashee for the datasheet for the 1N34A to read its characteristics.

By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. A buzzer is made to work specifically at a particular frequency.

Home Questions Tags Users Unanswered. If not, I hath been lead astray by this link and videos.