We like regenerative receivers. They perform well and are very simple to make. example? [Radio abUse] Modified some existing designs and built Single transistor receiverWell, if you don’t count the dozens of transistors that may be on the audio amplifier IC, one transistor, but we will not quibble. You can watch a video about the simple receiver below-it looks good on a neatly made universal board.
#22 The coil of the line dominates the visual layout, and we think winding it may be the most time-consuming part of the project. This layout is suitable for single-sided PCB, if you tend to develop this skill, then this will be a good hand-made board.
The working principle of the regenerative receiver is to make the amplifier slightly oscillate at a specific frequency. This provides extremely high gain at a specific frequency, allowing only a single stage to really pull in the signal.
We are a little sad to find out that there is a torn radio whose volume is lowered to construct another plan. However, we believe that this is progress. We would love to make a module with an audio amplifier, and then keep the RF part intact. But then again, we have a lot of partial items like dust on the shelf, so maybe this is not a good idea.
Although regenerative receivers are not the most common architecture today, they still have a place. Inventor Edwin Armstrong (Edwin Armstrong) developed many radio technologies that we still use today.