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µTracer (uTracer), part 6: Making a custom heater supply
The design of a switched voltage supply with adjustable voltage and current limit. Continue reading
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µTracer (uTracer), part 5: Heater supply using a simple buck converter?
The pros and cons of using a standard buck regulator. Continue reading
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µTracer (uTracer), part 4: The built-in heater supply
Testing the onboard PWM regulator for tube heaters. Continue reading
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µTracer (uTracer), part 3: Making a custom USB interface
Designing and building a UART-to-USB plugin adapter for the µTracer board. Continue reading
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µTracer (uTracer), part 1: Selecting a vacuum tube tester
Some of the alternatives I considered before deciding to buy the µTracer. Continue reading
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Concept: Low loss polarity protection using a MOSFET
Many electronic circuits are likely to get destroyed if the DC source polarity is reversed. Whenever there’s a possibility that the user might reverse the polarity by accident, the circuit should have an onboard polarity protection. In it’s simplest form, polarity protection may be implemented using a single diode: The drawback of this method is… Continue reading
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Project: My first tube amplifier, part 2: construction
Building a simple tube amplifier. Continue reading
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Project: My first tube amplifier, part 1: circuit design
Designing a simple tube amplifier. Continue reading
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Concept: Breadboard prototyping vacuum tube circuits
Faster and easier experimentation and prototyping with breadboard adapters. Continue reading
CATEGORIES
- Devices (59)
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ABOUT ME
Self-taught electronics hobbyist. Collector of Tandberg and other Norwegian broadcast receivers.
Retronics 