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Posts tagged xtal

Circuit diagram 75 Meter QRP SSB Transceiver

The 75 Meter QRP SSB Transceiver Theory of Operation 6-30-03 In general, the transceiver switches the 4-element 1500 ohm xtal BPF ends between the inputs and outputs of the two SA602s to reverse the signal flow for R/T operation. Since no IF amplifier is used in the design, 20 dB of additional receiver gain is […]

How much does an electronics design engineer make in Demark?

VLSI Engineer asked: Specifically I’d like to know if someone has a link to the salary statistics. And more specifically I’d like to know how much you think is the average pay for a VLSI engineer in Denmark with 10 years experience? Is ~50K (DKK) a good monthly salary or not?

Infra red switch circuit

Infra red switch circuit using 555

Audio Protector Circuit

Audio Protector Circuit using LM555, TL074, 1N914

Practical Application – Intercom Circuit

The simple switch shown so far can be used in simple audio applications. Here is a simple “all-master” intercom circuit that steers an audio amplifier towards one of several distant receivers. All units shown are identical and are connected to the same multipair cable. One battery powers all units. You press the button corresponding to […]

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