4049 Oscillator with Mark and Space (CB24857E)

With mark and space adjustment this circuit was found in November 1984 Radio Electronics. The base frequency depends on C1.

Divider by 8 (CB20104E)
This divider by 8 is synchronized because it is implemented based on TTL or CMOS logic according to the...
LDR Sensitive Passage Sensor (CB24482E)
This circuit is more sensitive than the previous one, in the sense that we can use weaker and more...
Dual 18 V power supply (CB25266E)
Suggested to power the previous circuit, this power supply was found in the December 1990 issue of...