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Jen HF Modulator
Here's a great project for a replica of a very rare beast. An all inclusive PDF file for this project.
Make it your own
Modification Instructions
Version 2004JULY27 · Copyright 2004 JD Sleep · Trademarks are property of their owners
Here's a great little noise maker. See the site for link to sound files. Nothing too difficult about building this, the layout will accommodate transistors with EBC or BEC pinout.
Bill of Materials
Resistors (1/4 watt rating) 1 – 1k2 (1.2k) 1 – 2k (2.2k) 1 – 4k7 (current limiting for LED) 1 – 10k 1 – 12k 1 - 18k 2 – 33k 2 – 100k 1 – 220k 1 – 560k 2 – 2M2 Pots (1/4 watt or higher rating) 3 - 100k linear Transistors 3 – 2N5172 or other bipolar NPN
Capacitors (minimum 16 volt rating) 2 – 0.0022uF film 1 – 0.0033uF film 1 – 0.01uF film 3 – 0.047uF film 1 - 0.1uF film 3 – 0.22uF film 1 – 47uF aluminum electrolytic Other 1 – 3PDT or DPDT heavy duty foot switch (bypass) 1 – mono quarter inch jack 1 – stereo quarter inch jack 9v battery snaps & holder and/or DC jack knobs, Copper-clad board, etchant, or perfboard 24 gauge stranded wire Enclosure
Box size 6.1cm x 3.1cm
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Jen High Frequency Modulator
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Jen High Frequency Modulator
Here's a layout using the 2N5172 or other BCE type transistors.
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Jen High Frequency Modulator
Here's a layout using the 2N3904 or other CBE type transistors.
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