That's "well done", as in marginally burned.
Here's an example of "Hownot2" if you decide to build your own Motor Mouth Mauldulator. He only sells the "brain", the small circuit board where the magic happens. All that boring stuff like an enclosure, power cord, DC supply, controls, knobs, audio jacks, power transistor and pilot light are your problem. Naturally, those things are all more or less generic in nature, so there's not much money to be made selling you all that stuff. MMM only sells you the heart of his modulation system.
And, yeah. It's a high-level modulator with its own audio input, separate from the radio's mike circuit. Feeds modulated DC straight to the radio's driver and final transistors. AFTER you have severed connections to the factory's AM modulator circuit.
Needless to say, selling just a printed circuit board opens the door for a legion of folks who are willing to buy a cabinet, punch holes, buy knobs, potentiometers, transistors and other stuff to build the complete MMM system around this circuit board.
Most common way to do this is buy a chinese switchmode DC-power "brick" to provide the 24 Volts (yes) DC that runs this show. A modulation transistor and heat sink that are big enough are a really good idea.
Shouldn't take an expert to see this heat sink is probably not big enough. The melted plastic shoulder washer on the transistor is a clue.
I won't reveal whose name is on the cover of this cabinet. Nothing to be gained by that. Besides, I would be accused of bashing. Consider that every one of these that you see built this way represents a market opportunity for me. Bashing that guy is too much like biting the hand that feeds me. Feel free to guess who made it.
This power supply is in theory the right size. I would prefer one a bit larger, but those won't fit inside this cabinet.
I'll cross my fingers and assume the other "kaboom" issues caused this supply to fail. Gotta keep in mind the bigger the power supply, the bigger all the stuff downstream from it has to be, or risk breakdowns. We'll install a new one that says "MeanWell". That's the traditional quality brand, if it's not counterfeit.
Using double-sided adhesive foam saves assembly time. Has the opposite effect if you ever want to take it back out. We'll be scraping this stuff off and using threaded hardware to secure the power supply.
The modulation transistor and heat sink both get upgraded.
This heat sink just fits on the rear of this cabinet.
No I haven't plugged it in to see what it does.
Yet. Got it all connected about time to go home for dinner. Murphy's Law says I would never have gotten a quick positive test result when I'm already late for dinner.
Film at 11, or when I get it hooked up.
73
Here's an example of "Hownot2" if you decide to build your own Motor Mouth Mauldulator. He only sells the "brain", the small circuit board where the magic happens. All that boring stuff like an enclosure, power cord, DC supply, controls, knobs, audio jacks, power transistor and pilot light are your problem. Naturally, those things are all more or less generic in nature, so there's not much money to be made selling you all that stuff. MMM only sells you the heart of his modulation system.
And, yeah. It's a high-level modulator with its own audio input, separate from the radio's mike circuit. Feeds modulated DC straight to the radio's driver and final transistors. AFTER you have severed connections to the factory's AM modulator circuit.
Needless to say, selling just a printed circuit board opens the door for a legion of folks who are willing to buy a cabinet, punch holes, buy knobs, potentiometers, transistors and other stuff to build the complete MMM system around this circuit board.
Most common way to do this is buy a chinese switchmode DC-power "brick" to provide the 24 Volts (yes) DC that runs this show. A modulation transistor and heat sink that are big enough are a really good idea.
Shouldn't take an expert to see this heat sink is probably not big enough. The melted plastic shoulder washer on the transistor is a clue.
I won't reveal whose name is on the cover of this cabinet. Nothing to be gained by that. Besides, I would be accused of bashing. Consider that every one of these that you see built this way represents a market opportunity for me. Bashing that guy is too much like biting the hand that feeds me. Feel free to guess who made it.
This power supply is in theory the right size. I would prefer one a bit larger, but those won't fit inside this cabinet.
I'll cross my fingers and assume the other "kaboom" issues caused this supply to fail. Gotta keep in mind the bigger the power supply, the bigger all the stuff downstream from it has to be, or risk breakdowns. We'll install a new one that says "MeanWell". That's the traditional quality brand, if it's not counterfeit.
Using double-sided adhesive foam saves assembly time. Has the opposite effect if you ever want to take it back out. We'll be scraping this stuff off and using threaded hardware to secure the power supply.
The modulation transistor and heat sink both get upgraded.
This heat sink just fits on the rear of this cabinet.
No I haven't plugged it in to see what it does.
Yet. Got it all connected about time to go home for dinner. Murphy's Law says I would never have gotten a quick positive test result when I'm already late for dinner.
Film at 11, or when I get it hooked up.
73
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