You Do Need power plug adapter while traveling from North Cyprus to Equatorial Guinea.

Here is Why You Need An Adapter

The outlet and plug type used in Equatorial Guinea are C and E and in North Cyprus is G. This is how they look like.

North Cyprus

In North Cyprus, outlets of type G are in use.

Type G

Equatorial Guinea

In Equatorial Guinea, outlets of type C and E are in use.

Type C

Type E