Most diodes are made of silicon because of its ease of processing and stability, however they have one disadvantage: a silicon diode has a forward voltage drop of around 0. This means that if you had a 7. In a Bridge Rectifier the current passes through two diodes. Therefore the total forward voltage drop is up to 1. Germanium Diodes A Germanium Diode such as the 1N34 pictured above will typically have a forward voltage drop of just 0. Older germanium diodes had a larger leakage of current at a reverse voltage, but now American Microsemiconductor and others supply a range of improved low current leakage germanium diodes.
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Silicon diodes are rated around. However, the voltage for the 1N34A Diode is measured with a current around 10ma. As the current increases so does the Voltage Drop and vise versa. The 1N34A Germanium Diode actually starts to conduct at very low voltages.
The 1N34A will start to conduct around. So in a Crystal Radio Receiver you need only to produce around. The 1N34A Germanium Diode, a ceramic earphone and a tuning coil are all that is needed to make a simple crystal radio set. Because Crystal Radio Sets use only the power coming from the antenna, a good antenna is required to drive the earphone of a Crystal Radio Set.
If you live in the city close to a transmitter antenna then you should be able to pick up that station on your Crystal Radio Set Xtal Radio Set with only a short antenna wire. Because of their low forward voltage drop, they have found uses in Sound Effect Circuits and Voltage Dropping Circuits. The 1N34A Diodes I sell are of highest quality. You can Buy 1N34A Diodes from me with confidence.
They are used as detectors and in up converter and down converter circuits Mixers. The 1N34A is also a good RF input bypass or shunt to protect equipment from voltage spikes. The 1N34A is also very popular in sound effect circuits acting as a clipper to produce Fuzzy sounds and various distortions.
Guitar sound effect circuits and Pedal circuits often specify these. Some places are selling silicon diodes as a substitute or equivalent replacement with the 1N34A number as germanium. Some of there data sheets even say germanium in the header but state silicon in the data area. Mine are germanium point contact diodes and not Schottky Silicon Diode. I have a large supply of other types of Germanium Diodes other than the 1N34A.
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1N34A Germanium Diode
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