This eBay auction is for a quantity of 1 brand new Audio / Signal Transformer with a 1:1 ratio of Primary to Secondary. The input and output impedance is 10 KOhms and the DC Resistance of the Primary = 389 Ohms and the DC Resistance of the Secondary = 389 Ohms. Each transformer measures 22 mm long by 15mm wide and measures 17mm high.
This eBay auction is for a quantity of 1 brand new N018 Audio / Signal Transformer with a 1:1 ratio of Primary to Secondary. The input and output impedance is 10 KOhms and the DC Resistance of the Primary = 389 Ohms and the DC Resistance of the Secondary = 389 Ohms. Each transformer measures 22 mm long by 15mm wide and measures 17mm high.
TP4056 1A Current Lithium Battery Charging Board DIY Mobile Power Charging Feature: Size: 30*15mm Input voltage: 4.8-8 V DC Current Out: 1000mA max. ( 100-1000mA adjustable) This board has the reserved bi-color common anode LED hole, suitable for DIY universal rechargeable 18650 lithium battery charger.Red LED on while charging, green LED on while full . Green LED on and the red LED flashes (frequency 1-2 seconds flashing) while the battery is
These are spare parts from a research laboratory all put into storage about 25 years ago. The parts were believed to be working at the time. Five are still in the box, one without a box.
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