How To Charge Li-Ion/LiPo Batteries With A Power Supply Video by EEVBlog How to safely charge Lithium Ion & Lithium Polymer batteries with a bench power supply, for when you don’t have the correct charger available. WARNING: Take care using PSU’s for charging unprotected cells. A fault in the PSU might overload or short the…
GreenEarth USB Rechargeable AA Batteries | 1450 mAh | Quick Charge USB Charger | 500 Cycles Reusable | NiMH Double A 1.2v (2 Pack) About this item: ✅ USB RECHARGEABLE BATTERIES – Whether you’re camping or at home, you can simply charge them with a single USB port. No need to buy batteries frequently.…
Simple SDR Receiver that can receive frequencies up to approximately 30MHz, if an optional Si5351 clock generator is used. Without this, it receives up to about 20MHz, using the ESP32 clock dividers. The circuit is so simple that it can even be built on a breadboard. Tayloe Quadrature Detector circuit on a solderless breadboard Circuit…
Antuino is an accurate instrument that can be used in the field to measure SWR, field strength, modulation, etc. In the lab, it can be used to sweep filters, measure gain, distortion, frequency response, etc. It works upto 150 Mhz. On the third harmonic, it is usable on 435 Mhz band as well (with…
This item is a set of 10 band pass filters (BPF), one for each of the HF bands 160, 80, 60, 40, 30, 20, 17, 15, 12 and 10m. The filters are designed for receiver input filtering and use the popular double-tuned-circuit which is reliable and easy to build, without needing access to any special equipment. The kits…