4 Pack Piezoelectric Earphone High Impedance Ceramic Earpiece Bare Wire Leads Transistor Crystal Radios & DIY Make Electronics Projects 20,000 Ohm Sensitivity Classic Style Piezo Electric (4pk)
4.7 (93 items)
Limited Time Sale$12.75 cheaper than the new price!!
Free cash-on-delivery fees for purchases over $99
Product details
| Management number | 218139527 | Release Date | 2026/05/03 | List Price | $8.50 | Model Number | 218139527 | ||
|---|---|---|---|---|---|---|---|---|---|
| Category | |||||||||
Ceramic earphone/Crystal earpiece for Transistor and Crystal Radios, Sensitive Electronics Projects, Lab research and other DIY experiments requiring a very sensitive high impedance earpiece. Piezoelectric earphones also known as crystal earphones, ceramic earphone, and piezo earpieces are the most sensitive earphones. They are in fact many times more sensitive than even the most sensitive magnetic earphones, dynamic earphones, or electrostatic earphones that you may use on your smartphone. Sensitive earphones have a very high impedance, which is measured in ohms and should not be used directly with a modern amplified radio. Crystal Earphones are so sensitive and require so little power to operate that you can hear a small 'click' just by touching the two bare leads together. Crystal radios will not work with modern earphones or 'earbuds' as they are designed to operate with amplified audio sources found in today's electronic devices. Crystal Earphones are used in the construction of the crystal radio and in some science experiments such as listening to electric fish. Specifications: ▪ Impedance: 20K ohm ▪ Resistance: 20M ohm ▪ Capacitance: 15,000 pf ▪ Sensitivity: 57db at 1KHz ▪ Frequency Range: 200 - 8,000Hz ▪ Operation Temperature: -20 to 60 degree Celsius ▪ Wire: 42-inch Molded twisted Wire ▪ Connector: Tinned Leads for DIY Connections ***Please Note: These are the manufacturer specifications and may vary slightly in each production unit
- Perfect to make electronics projects like Crystal or Transistor Radios DIY Electronics Kits
- High 20,000 ohm impedance with resistance over 20 million ohms and a capacitance of 15,000 pf
- Rated Sensitivity of 57db at 1KHz in the frequency range from 200 to 8,000Hz
- Classic style highly sensitive molded earpiece with 42-in twisted wire with pre-tinned bare wire connections (Also available with 3.5mm Aux Headphone Style Phono Connector - See B01JEOH3QQ)
- 2022 Updated Model Available (See B09MZML96L) Featuring All Soldered Connections and a Brass Diaphram for Increased reliability and life. PiezoElectric Crystal Earpiece for DIY Electronics Kits
| UPC | 789048344146 |
|---|---|
| Color | (Beige - Bare Wire Leads) |
| Model | Piezo-bare |
| Frequency | 8000 Hz |
| Brand Name | ProTechTrader |
| Model Name | Piezo-bare |
| Unit Count | 1.0 Count |
| Item Length | 42 Inches |
| Item Weight | 0.22 Ounces |
| Manufacturer | ProTechTrader |
| Connector Type | Auxiliary |
| Number of Items | 4 |
| Connector Gender | Male-to-Male |
| Included Components | Piezoelectric Earphone with Bare Wire Leads for Crystaol Radios |
| Warranty Description | 1 Year |
| Connectivity Technology | Wired |
| Recommended Uses For Product | Audio Transmission, DIY Electronics, Radios, Scientific Research |
| Other Special Features of the Product | High Sensitivity Vintage Style Ear Phone, Piezo Electric 20k ohm Impedance Ear Piece |
Headsets & Microphones
Pediatric Apparel
Correction of product information
If you notice any omissions or errors in the product information on this page, please use the correction request form below.
Correction Request Form