WebCK721. PNP germanium junction transistor intended as audio amplifier. -20 V collector voltage; -6.0 mA emitter current; 30mW dissipation. Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe): 8. You reach this tube or valve page from a search after clicking the "tubes" tab or by clicking a tube ... WebJun 3, 2024 · Both these sets were the true cats whisker kind, to locate stations. Later graduated to Mullard OA79 germanium diodes & also 1N34s–finally added the 1st Raytheon made PNP transistor CK722 as an headphone amplifier. For the earlier versions I had to use darn hard to find, very high impeadance headsets.
History of Transistors Museum
WebThe top scan is a close-up of the method used to attach the CK722 into the circuit. The knurled nuts are hand tightened, and this method is used for both the CK722 transistor and the CK705 diode required for the radio. … http://www.ck722museum.com/ cdon.fi asiakaspalvelu numero
CK 722, Tube CK722; Röhre CK 722 ID34403, …
http://ck722museum.com/page8.html WebGet the best deals on germanium radio when you shop the largest online selection at eBay.com. Free shipping on many items Browse your favorite brands affordable prices. ... Transistor Radio Shield Germanium RA277 Ear Receiver Antenna Earth Wire Vtg Rare. $100.00. $15.00 shipping. ... 1pc NOS CK722 Transistor Black Raytheon PNP Ge … WebMar 3, 2003 · It featured a gleaming silver CK722, a Raytheon CK705 germanium diode, an ancient pair of magnetic headphones, a vintage comb-tuning capacitor, a variable … cdot oise tennis