
( Brand: Heathkit ), ( Model: 407-146 ), ( Part Type: Plate Meter )
The Heathkit Plate Volt Meter Model SB-220/SB-221 (407-146) is an exceptional instrument designed for precise voltage measurements in various electronic applications. This meter is part of Heathkit's renowned line of test equipment, which has been trusted by hobbyists, engineers, and technicians for decades.
The SB-220/SB-221 is a DC plate voltage meter, capable of measuring voltages up to 220 volts. It features a high-precision, 5-1/2-digit, dual-range meter that provides accurate readings with a resolution of 0.01 volts. The meter can be set to either the 0-100 or 0-220 volts range, making it versatile for use in a variety of applications.
One of the standout features of this meter is its heavy-duty construction. The SB-220/SB-221 is built to last, with a rugged, all-metal case that is designed to withstand the rigors of everyday use in a lab or workshop setting. The meter's large, easy-to-read digits are backed by a bright, red LED display, ensuring that readings are visible even in low-light conditions.
The SB-220/SB-221 also includes a variety of useful features to make measurements more convenient. These include a DC voltage range switch, a hold function that freezes the display to prevent drift, and a BNC jack for easy connection to test leads. The meter also features a built-in fuse to protect against overcurrent, ensuring safe operation even in high-voltage applications.
In summary, the Heathkit Plate Volt Meter Model SB-220/SB-221 (407-146) is a high-precision, rugged, and versatile instrument that is perfect for measuring DC plate voltages in a variety of electronic applications. Its durable construction, large display, and useful features make it an excellent choice for hobbyists, technicians, and engineers alike.
Pros of buying Heathkit SB-220/SB-221 407-146 Plate Volt Meter:1. Accurate Measurements: Heathkit is known for its precision and reliability. The SB-220/SB-221 plate volt meter is no exception. It provides accurate measurements of high voltages, making it ideal for electronics repair and maintenance.
2. Durable Construction: The meter is built to last. It has a robust construction with high-quality components, ensuring long-term use.
3. Easy to Use: The meter is easy to use with clear indications and easy-to-read scales. It also has a backlit display for better visibility in low light conditions.
4. Affordable: Compared to modern digital multimeters, the Heathkit SB-220/SB-221 is quite affordable. It's a cost-effective option for hobbyists and professionals.
Cons of buying Heathkit SB-220/SB-221 407-146 Plate Volt Meter:1. Lack of Modern Features: The meter does not have modern features like data logging, auto-ranging, or digital display. It relies on analog indicators which may not be as precise as digital readings.
2. Limited Range: The meter is designed for measuring high voltages and has a limited range for low voltages. It may not be suitable for all types of measurements.
3. Bulky and Heavy: The meter is quite bulky and heavy, which may make it less portable.
Conclusion:The Heathkit SB-220/SB-221 407-146 Plate Volt Meter is a reliable and accurate tool for measuring high voltages. Its durability, ease of use, and affordability make it a great choice for hobbyists and professionals. However, the lack of modern features and limited range may be a drawback for some users. If you primarily need to measure high voltages and are looking for a cost-effective option, this meter is worth considering. But if you require a full-featured digital multimeter, you may want to consider other options.
Here is a rare find, new in the box Heathkit plate voltage meter for SB-220,221 amplifier, numbers on match instruction manual.