We found this circuit in an American publication from the 90s. It generates pulses that can be modulated in amplitude. The supply can be done by voltages from 5 to 12 V and the frequency depends on C1 and C2.
This circuit makes use of an integrated LM2907. The circuit is from an old documentation being...
This sensitive signal follower with an LM386 integrated circuit can be used in both audio and RF...
This transmitter, found in Raytheon documentation from 1957, has a range of a few meters. L1 can...